{"id":83363,"date":"2022-03-07T16:02:31","date_gmt":"2022-03-07T22:02:31","guid":{"rendered":"https:\/\/engineswapdepot.com\/?p=83363"},"modified":"2022-03-10T15:51:24","modified_gmt":"2022-03-10T21:51:24","slug":"2004-subaru-forester-with-a-turbo-ej257","status":"publish","type":"post","link":"https:\/\/engineswapdepot.com\/?p=83363","title":{"rendered":"2004 Subaru Forester with a Turbo EJ257"},"content":{"rendered":"<p><a href=\"https:\/\/engineswapdepot.com\/?attachment_id=83370\" rel=\"attachment wp-att-83370\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"83370\" data-permalink=\"https:\/\/engineswapdepot.com\/?attachment_id=83370\" data-orig-file=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-01.jpg?fit=2048%2C1365&amp;ssl=1\" data-orig-size=\"2048,1365\" data-comments-opened=\"1\" data-image-title=\"2004 Subaru Forester with a turbo EJ257 flat-four 01\" data-image-description=\"&lt;p&gt;2004 Subaru Forester with a turbo EJ257 flat-four&lt;\/p&gt;\n\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-01.jpg?fit=1200%2C800&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-01.jpg?resize=600%2C400&#038;ssl=1\" alt=\"2004 Subaru Forester with a turbo EJ257 flat-four\" width=\"600\" height=\"400\" class=\"alignnone size-medium wp-image-83370\" srcset=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-01.jpg?resize=600%2C400&amp;ssl=1 600w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-01.jpg?resize=1200%2C800&amp;ssl=1 1200w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-01.jpg?resize=768%2C512&amp;ssl=1 768w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-01.jpg?resize=1536%2C1024&amp;ssl=1 1536w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-01.jpg?resize=930%2C620&amp;ssl=1 930w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-01.jpg?w=2048&amp;ssl=1 2048w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a><\/p>\n<p>This 2004 Subaru Forester visited <a href=\"https:\/\/nationalspeedinc.com\/\">National Speed<\/a> with a goal of 300+ hp to the wheels from a new engine built for reliability. The SUV arrived at the company with a swapped 2.5 L EJ255 flat-four. National Speed replaced it with a IAG Performance Stage 2 EJ257 short-block. The motor features new Subaru OEM case halves, STI crank, IAG-spec JE forged pistons, and IAG-spec h-beam rods. Parts carried over from the previous engine setup include a Subaru IHI VF39 turbocharger, Invidia downpipe and high-flow catalytic converter, PERRIN Performance up-pipe, STI top-mount intercooler, Walbro 255 fuel pump, and COBB Tuning Accessport V3. The combo made 313 hp and 327 lb-ft to all four wheels on 93 octane. <\/p>\n<p><a href=\"https:\/\/engineswapdepot.com\/?attachment_id=83371\" rel=\"attachment wp-att-83371\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"83371\" data-permalink=\"https:\/\/engineswapdepot.com\/?attachment_id=83371\" data-orig-file=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-02.jpg?fit=2048%2C1365&amp;ssl=1\" data-orig-size=\"2048,1365\" data-comments-opened=\"1\" data-image-title=\"2004 Subaru Forester with a turbo EJ257 flat-four 02\" data-image-description=\"&lt;p&gt;2004 Subaru Forester with a turbo EJ257 flat-four&lt;\/p&gt;\n\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-02.jpg?fit=1200%2C800&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-02.jpg?resize=600%2C400&#038;ssl=1\" alt=\"2004 Subaru Forester with a turbo EJ257 flat-four\" width=\"600\" height=\"400\" class=\"alignnone size-medium wp-image-83371\" srcset=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-02.jpg?resize=600%2C400&amp;ssl=1 600w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-02.jpg?resize=1200%2C800&amp;ssl=1 1200w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-02.jpg?resize=768%2C512&amp;ssl=1 768w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-02.jpg?resize=1536%2C1024&amp;ssl=1 1536w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-02.jpg?resize=930%2C620&amp;ssl=1 930w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-02.jpg?w=2048&amp;ssl=1 2048w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a><\/p>\n<p><a href=\"https:\/\/engineswapdepot.com\/?attachment_id=83372\" rel=\"attachment wp-att-83372\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"83372\" data-permalink=\"https:\/\/engineswapdepot.com\/?attachment_id=83372\" data-orig-file=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-03.jpg?fit=2048%2C1365&amp;ssl=1\" data-orig-size=\"2048,1365\" data-comments-opened=\"1\" data-image-title=\"2004 Subaru Forester with a turbo EJ257 flat-four 03\" data-image-description=\"&lt;p&gt;2004 Subaru Forester with a turbo EJ257 flat-four&lt;\/p&gt;\n\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-03.jpg?fit=1200%2C800&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-03.jpg?resize=600%2C400&#038;ssl=1\" alt=\"2004 Subaru Forester with a turbo EJ257 flat-four\" width=\"600\" height=\"400\" class=\"alignnone size-medium wp-image-83372\" srcset=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-03.jpg?resize=600%2C400&amp;ssl=1 600w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-03.jpg?resize=1200%2C800&amp;ssl=1 1200w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-03.jpg?resize=768%2C512&amp;ssl=1 768w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-03.jpg?resize=1536%2C1024&amp;ssl=1 1536w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-03.jpg?resize=930%2C620&amp;ssl=1 930w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-03.jpg?w=2048&amp;ssl=1 2048w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a><\/p>\n<p><a href=\"https:\/\/engineswapdepot.com\/?attachment_id=83373\" rel=\"attachment wp-att-83373\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"83373\" data-permalink=\"https:\/\/engineswapdepot.com\/?attachment_id=83373\" data-orig-file=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-04.jpg?fit=1365%2C2048&amp;ssl=1\" data-orig-size=\"1365,2048\" data-comments-opened=\"1\" data-image-title=\"2004 Subaru Forester with a turbo EJ257 flat-four 04\" data-image-description=\"&lt;p&gt;2004 Subaru Forester with a turbo EJ257 flat-four&lt;\/p&gt;\n\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-04.jpg?fit=800%2C1200&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-04.jpg?resize=600%2C900&#038;ssl=1\" alt=\"2004 Subaru Forester with a turbo EJ257 flat-four\" width=\"600\" height=\"900\" class=\"alignnone size-medium wp-image-83373\" srcset=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-04.jpg?resize=600%2C900&amp;ssl=1 600w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-04.jpg?resize=800%2C1200&amp;ssl=1 800w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-04.jpg?resize=768%2C1152&amp;ssl=1 768w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-04.jpg?resize=1024%2C1536&amp;ssl=1 1024w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-04.jpg?w=1365&amp;ssl=1 1365w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a><\/p>\n<p><a href=\"https:\/\/engineswapdepot.com\/?attachment_id=83374\" rel=\"attachment wp-att-83374\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"83374\" data-permalink=\"https:\/\/engineswapdepot.com\/?attachment_id=83374\" data-orig-file=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-05.jpg?fit=2048%2C1365&amp;ssl=1\" data-orig-size=\"2048,1365\" data-comments-opened=\"1\" data-image-title=\"2004 Subaru Forester with a turbo EJ257 flat-four 05\" data-image-description=\"&lt;p&gt;2004 Subaru Forester with a turbo EJ257 flat-four&lt;\/p&gt;\n\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-05.jpg?fit=1200%2C800&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-05.jpg?resize=600%2C400&#038;ssl=1\" alt=\"2004 Subaru Forester with a turbo EJ257 flat-four\" width=\"600\" height=\"400\" class=\"alignnone size-medium wp-image-83374\" srcset=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-05.jpg?resize=600%2C400&amp;ssl=1 600w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-05.jpg?resize=1200%2C800&amp;ssl=1 1200w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-05.jpg?resize=768%2C512&amp;ssl=1 768w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-05.jpg?resize=1536%2C1024&amp;ssl=1 1536w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-05.jpg?resize=930%2C620&amp;ssl=1 930w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-05.jpg?w=2048&amp;ssl=1 2048w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a><\/p>\n<p><a href=\"https:\/\/engineswapdepot.com\/?attachment_id=83375\" rel=\"attachment wp-att-83375\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"83375\" data-permalink=\"https:\/\/engineswapdepot.com\/?attachment_id=83375\" data-orig-file=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-06.jpg?fit=2048%2C1365&amp;ssl=1\" data-orig-size=\"2048,1365\" data-comments-opened=\"1\" data-image-title=\"2004 Subaru Forester with a turbo EJ257 flat-four 06\" data-image-description=\"&lt;p&gt;2004 Subaru Forester with a turbo EJ257 flat-four&lt;\/p&gt;\n\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-06.jpg?fit=1200%2C800&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-06.jpg?resize=600%2C400&#038;ssl=1\" alt=\"2004 Subaru Forester with a turbo EJ257 flat-four\" width=\"600\" height=\"400\" class=\"alignnone size-medium wp-image-83375\" srcset=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-06.jpg?resize=600%2C400&amp;ssl=1 600w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-06.jpg?resize=1200%2C800&amp;ssl=1 1200w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-06.jpg?resize=768%2C512&amp;ssl=1 768w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-06.jpg?resize=1536%2C1024&amp;ssl=1 1536w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-06.jpg?resize=930%2C620&amp;ssl=1 930w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-06.jpg?w=2048&amp;ssl=1 2048w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a><\/p>\n<p><a href=\"https:\/\/engineswapdepot.com\/?attachment_id=83376\" rel=\"attachment wp-att-83376\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"83376\" data-permalink=\"https:\/\/engineswapdepot.com\/?attachment_id=83376\" data-orig-file=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-07.jpg?fit=2048%2C1365&amp;ssl=1\" data-orig-size=\"2048,1365\" data-comments-opened=\"1\" data-image-title=\"2004 Subaru Forester with a turbo EJ257 flat-four 07\" data-image-description=\"&lt;p&gt;2004 Subaru Forester with a turbo EJ257 flat-four&lt;\/p&gt;\n\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-07.jpg?fit=1200%2C800&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-07.jpg?resize=600%2C400&#038;ssl=1\" alt=\"2004 Subaru Forester with a turbo EJ257 flat-four\" width=\"600\" height=\"400\" class=\"alignnone size-medium wp-image-83376\" srcset=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-07.jpg?resize=600%2C400&amp;ssl=1 600w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-07.jpg?resize=1200%2C800&amp;ssl=1 1200w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-07.jpg?resize=768%2C512&amp;ssl=1 768w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-07.jpg?resize=1536%2C1024&amp;ssl=1 1536w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-07.jpg?resize=930%2C620&amp;ssl=1 930w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-07.jpg?w=2048&amp;ssl=1 2048w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a><\/p>\n<p><a href=\"https:\/\/engineswapdepot.com\/?attachment_id=83377\" rel=\"attachment wp-att-83377\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"83377\" data-permalink=\"https:\/\/engineswapdepot.com\/?attachment_id=83377\" data-orig-file=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-08.jpg?fit=2048%2C1365&amp;ssl=1\" data-orig-size=\"2048,1365\" data-comments-opened=\"1\" data-image-title=\"2004 Subaru Forester with a turbo EJ257 flat-four 08\" data-image-description=\"&lt;p&gt;2004 Subaru Forester with a turbo EJ257 flat-four&lt;\/p&gt;\n\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-08.jpg?fit=1200%2C800&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-08.jpg?resize=600%2C400&#038;ssl=1\" alt=\"2004 Subaru Forester with a turbo EJ257 flat-four\" width=\"600\" height=\"400\" class=\"alignnone size-medium wp-image-83377\" srcset=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-08.jpg?resize=600%2C400&amp;ssl=1 600w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-08.jpg?resize=1200%2C800&amp;ssl=1 1200w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-08.jpg?resize=768%2C512&amp;ssl=1 768w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-08.jpg?resize=1536%2C1024&amp;ssl=1 1536w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-08.jpg?resize=930%2C620&amp;ssl=1 930w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-08.jpg?w=2048&amp;ssl=1 2048w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a><\/p>\n<p><a href=\"https:\/\/engineswapdepot.com\/?attachment_id=83378\" rel=\"attachment wp-att-83378\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"83378\" data-permalink=\"https:\/\/engineswapdepot.com\/?attachment_id=83378\" data-orig-file=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-09.jpg?fit=2048%2C1365&amp;ssl=1\" data-orig-size=\"2048,1365\" data-comments-opened=\"1\" data-image-title=\"2004 Subaru Forester with a turbo EJ257 flat-four 09\" data-image-description=\"&lt;p&gt;2004 Subaru Forester with a turbo EJ257 flat-four&lt;\/p&gt;\n\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-09.jpg?fit=1200%2C800&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-09.jpg?resize=600%2C400&#038;ssl=1\" alt=\"2004 Subaru Forester with a turbo EJ257 flat-four\" width=\"600\" height=\"400\" class=\"alignnone size-medium wp-image-83378\" srcset=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-09.jpg?resize=600%2C400&amp;ssl=1 600w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-09.jpg?resize=1200%2C800&amp;ssl=1 1200w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-09.jpg?resize=768%2C512&amp;ssl=1 768w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-09.jpg?resize=1536%2C1024&amp;ssl=1 1536w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-09.jpg?resize=930%2C620&amp;ssl=1 930w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-09.jpg?w=2048&amp;ssl=1 2048w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a><\/p>\n<p><iframe loading=\"lazy\" width=\"600\" height=\"338\" src=\"https:\/\/www.youtube-nocookie.com\/embed\/8vV84cqxdzE\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe><\/p>\n<p>Source: <a href=\"https:\/\/nationalspeedinc.com\/2004-subaru-forester-xt-conversion-iag-short-block\/\">National Speed<\/a> (project page)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>This 2004 Subaru Forester visited National Speed with a goal of 300+ hp to the wheels from a new engine built for reliability. The SUV arrived at the company with a swapped 2.5 L EJ255 flat-four. National Speed replaced it with a IAG Performance Stage 2 EJ257 short-block. The motor features new Subaru OEM case&hellip;&nbsp;<a href=\"https:\/\/engineswapdepot.com\/?p=83363\" rel=\"bookmark\">Read More &raquo;<span class=\"screen-reader-text\">2004 Subaru Forester with a Turbo EJ257<\/span><\/a><\/p>\n","protected":false},"author":4,"featured_media":83370,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"off","neve_meta_content_width":70,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_wpcom_ai_launchpad_first_post":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[651],"tags":[],"class_list":["post-83363","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-forester"],"jetpack-related-posts":[{"id":93712,"url":"https:\/\/engineswapdepot.com\/?p=93712","url_meta":{"origin":83363,"position":0},"title":"2013 Subaru WRX with an EJ257","author":"swaptastic","date":"December 14, 2022","format":false,"excerpt":"This 2013 Subaru WRX arrived at National Speed with rod knock. The company swapped the factory EJ255 flat-four for an IAG Performance Stage 1 EJ257 short block. They reused the EJ255 heads and installed a WRX STI 11 mm oil pump, oil cooler, IAG Performance V2 oil pickup tube, Invidia\u2026","rel":"","context":"In &quot;WRX&quot;","block_context":{"text":"WRX","link":"https:\/\/engineswapdepot.com\/?cat=89"},"img":{"alt_text":"2013 Subaru WRX with an EJ257 flat-four","src":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/12\/2013-Subaru-WRX-with-an-EJ257-02.jpg?fit=1200%2C800&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/12\/2013-Subaru-WRX-with-an-EJ257-02.jpg?fit=1200%2C800&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/12\/2013-Subaru-WRX-with-an-EJ257-02.jpg?fit=1200%2C800&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/12\/2013-Subaru-WRX-with-an-EJ257-02.jpg?fit=1200%2C800&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/12\/2013-Subaru-WRX-with-an-EJ257-02.jpg?fit=1200%2C800&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":55349,"url":"https:\/\/engineswapdepot.com\/?p=55349","url_meta":{"origin":83363,"position":1},"title":"For Sale: 2004 Forester with a Turbo EJ257 Flat-Four","author":"swaptastic","date":"May 4, 2020","format":false,"excerpt":"This 2004 Subaru Forester is for sale in Forest, Virginia with a current bid of $14,000. Under the hood sits a turbocharged 2.5 L EJ257 flat-four built by Andrewtech Automotive. The engine features Manley Platinum-series pitons, 2015 STI forged crank, Manley H-Tuff rods, B25 heads with ARP studs, VF48 turbocharger,\u2026","rel":"","context":"In &quot;Forester&quot;","block_context":{"text":"Forester","link":"https:\/\/engineswapdepot.com\/?cat=651"},"img":{"alt_text":"2004 Subaru Forester with a turbo EJ257 flat-four","src":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2020\/05\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-01.jpg?fit=1200%2C800&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2020\/05\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-01.jpg?fit=1200%2C800&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2020\/05\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-01.jpg?fit=1200%2C800&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2020\/05\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-01.jpg?fit=1200%2C800&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2020\/05\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-01.jpg?fit=1200%2C800&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":85979,"url":"https:\/\/engineswapdepot.com\/?p=85979","url_meta":{"origin":83363,"position":2},"title":"2000 Subaru Impreza with a 700 hp Twin-Turbo Flat-Four","author":"swaptastic","date":"May 13, 2022","format":false,"excerpt":"Kendall Samuel and Mary Barker operate a Subaru performance company called Mechanical Advantage Racing in East Flat Rock, North Carolina. The company also races a 2000 Subaru Impreza 2.5 RS (GC8) they built to compete in road and time attack. The car is powered by a twin-turbo 2.3 L EJ-series\u2026","rel":"","context":"In &quot;Impreza&quot;","block_context":{"text":"Impreza","link":"https:\/\/engineswapdepot.com\/?cat=168"},"img":{"alt_text":"2000 Subaru Impreza with a twin-turbo EJ flat-four","src":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/05\/2000-Subaru-Impreza-with-a-twin-turbo-EJ-flat-four-01.jpg?fit=1200%2C800&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/05\/2000-Subaru-Impreza-with-a-twin-turbo-EJ-flat-four-01.jpg?fit=1200%2C800&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/05\/2000-Subaru-Impreza-with-a-twin-turbo-EJ-flat-four-01.jpg?fit=1200%2C800&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/05\/2000-Subaru-Impreza-with-a-twin-turbo-EJ-flat-four-01.jpg?fit=1200%2C800&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/05\/2000-Subaru-Impreza-with-a-twin-turbo-EJ-flat-four-01.jpg?fit=1200%2C800&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":8311,"url":"https:\/\/engineswapdepot.com\/?p=8311","url_meta":{"origin":83363,"position":3},"title":"1999 Subaru WRX STI with an EJ257","author":"swaptastic","date":"November 20, 2015","format":false,"excerpt":"Many Subaru fans might consider this car the ultimate dream, a classic looking two-door design with a bigger and more modern turbo engine. The two-door 1999 Subaru WRX STI is powered by a 2.5 L EJ257 flat-four. The EJ257 engine was originally designed for North American Impreza STI in 2004\u2026","rel":"","context":"In &quot;WRX&quot;","block_context":{"text":"WRX","link":"https:\/\/engineswapdepot.com\/?cat=89"},"img":{"alt_text":"1999 Subaru WRX STI with an EJ257","src":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2015\/11\/1999-Subaru-WRX-STI-with-an-EJ257-01.jpg?fit=1200%2C673&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2015\/11\/1999-Subaru-WRX-STI-with-an-EJ257-01.jpg?fit=1200%2C673&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2015\/11\/1999-Subaru-WRX-STI-with-an-EJ257-01.jpg?fit=1200%2C673&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2015\/11\/1999-Subaru-WRX-STI-with-an-EJ257-01.jpg?fit=1200%2C673&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2015\/11\/1999-Subaru-WRX-STI-with-an-EJ257-01.jpg?fit=1200%2C673&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":133504,"url":"https:\/\/engineswapdepot.com\/?p=133504","url_meta":{"origin":83363,"position":4},"title":"Porsche 911 with a Turbo Subaru EJ25","author":"swaptastic","date":"June 20, 2025","format":false,"excerpt":"Austin Barnett from Billetworkz owns a special 1976 Porsche 911 built by Quality Custom Rides in Lancaster, Pennsylvania. The sports car is powered by a turbocharged Subaru EJ25 flat-four capable of 450 hp (330 kW) to the wheels. It features an IAG 900 longblock, IAG Stage 4 heads, Corsa Veloce\u2026","rel":"","context":"In &quot;911&quot;","block_context":{"text":"911","link":"https:\/\/engineswapdepot.com\/?cat=103"},"img":{"alt_text":"1976 Porsche 911 with a turbocharged Subaru EJ25 flat-four","src":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/06\/1976-Porsche-911-with-a-Turbo-Subaru-EJ25-flat-four-01.jpg?fit=1200%2C675&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/06\/1976-Porsche-911-with-a-Turbo-Subaru-EJ25-flat-four-01.jpg?fit=1200%2C675&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/06\/1976-Porsche-911-with-a-Turbo-Subaru-EJ25-flat-four-01.jpg?fit=1200%2C675&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/06\/1976-Porsche-911-with-a-Turbo-Subaru-EJ25-flat-four-01.jpg?fit=1200%2C675&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/06\/1976-Porsche-911-with-a-Turbo-Subaru-EJ25-flat-four-01.jpg?fit=1200%2C675&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":141417,"url":"https:\/\/engineswapdepot.com\/?p=141417","url_meta":{"origin":83363,"position":5},"title":"2005 Subaru Outback with a Turbo EJ255","author":"swaptastic","date":"November 25, 2025","format":false,"excerpt":"Josh built his 2005 Subaru Outback XT to compete in GRIDLIFE Touring Cup (GLTC). Even though the wagon came with a turbocharged EJ255 flat-four, Josh's engine builder wanted a clean motor. So Josh pulled the turbo EJ255 flat-four from his 2005 Forester XT. The Forester motor was upgraded with forged\u2026","rel":"","context":"In &quot;Outback&quot;","block_context":{"text":"Outback","link":"https:\/\/engineswapdepot.com\/?cat=680"},"img":{"alt_text":"2005 Subaru Outback with a turbo EJ255 flat-four","src":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/11\/2005-Subaru-Outback-with-a-turbo-EJ255-flat-four-01.jpg?fit=1200%2C675&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/11\/2005-Subaru-Outback-with-a-turbo-EJ255-flat-four-01.jpg?fit=1200%2C675&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/11\/2005-Subaru-Outback-with-a-turbo-EJ255-flat-four-01.jpg?fit=1200%2C675&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/11\/2005-Subaru-Outback-with-a-turbo-EJ255-flat-four-01.jpg?fit=1200%2C675&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/11\/2005-Subaru-Outback-with-a-turbo-EJ255-flat-four-01.jpg?fit=1200%2C675&ssl=1&resize=1050%2C600 3x"},"classes":[]}],"jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2022\/03\/2004-Subaru-Forester-with-a-turbo-EJ257-flat-four-01.jpg?fit=2048%2C1365&ssl=1","_links":{"self":[{"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=\/wp\/v2\/posts\/83363","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=83363"}],"version-history":[{"count":11,"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=\/wp\/v2\/posts\/83363\/revisions"}],"predecessor-version":[{"id":83518,"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=\/wp\/v2\/posts\/83363\/revisions\/83518"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=\/wp\/v2\/media\/83370"}],"wp:attachment":[{"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=83363"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=83363"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=83363"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}