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Old 12-20-2012, 12:49 AM   #1
99imprezd
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Member#: 198964
Join Date: Jan 2009
Chapter/Region: Tri-State
Location: south NJ
Vehicle:
2004 WRX wgn, built!
WRB

Default Any Base tunes for EJ25 swap into EJ20?

Running my ej20 on cobb stage 3 with a VF39 & STi pink 565cc injectors.. about to swap a built (forged internal 100mm slugs) EJ257 longblock. Is there any base tune I can find out there to break the motor in on using my COBB tuner? THe map im on right now is for the 2liter so not sure if it would compensate for the extra displacemnt.. Any ideas or experiences to speak of?
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Old 12-24-2012, 06:33 AM   #2
jaxscuby
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2002 USDM WRX
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well the ecu does not know the displacement.
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Old 12-26-2012, 09:21 AM   #3
99imprezd
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WRB

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So would the ecu compensate accordingly? Im tuned for the injectors and turbo, just not sure how the ecu works on this setup.
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