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Old 05-26-2010, 05:49 PM   #4
Scooby Specialist
Member#: 217563
Join Date: Jul 2009
Chapter/Region: South East
Location: Eden NC
2006 Sti 12.68 @ 108
321WHP 422WTQ dynojet SAE


If your lower fuel correction below 40 g/s on sti ecu, i dont know what load columns are on wrx, are off and your higher rpms are off in same direction then i would adjust injector size to correct across board. if its off in higher rpm but close to +-5% in less than 40 g/s then i would adjust maf.

on my sti i adjusted both the injector size from 503 to 513 and rescaled part of the maf on my stock intake and my lower fuel trims were less than 4% and high rpm was almost dead on.

so the answer to your question depends on how it is off and where.
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