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Old 09-30-2012, 08:33 PM   #62
trollarc
Scooby Newbie
 
Member#: 255667
Join Date: Aug 2010
Chapter/Region: South East
Location: Hephzibah, GA
Vehicle:
2004 Impreza Wrx STI
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Quote:
Originally Posted by frechette821 View Post
hello, im just curious can u put STI heads on a ej25?
Yes. 2004+ Stis (USDM) have an ej257 engine. The EJ20X heads CAN go on an EJ25 but they bump compression. You should search for which one you want and what you are swaping them to (a n/a motor + low cc heads might make too high compression depending on what you are doing).
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