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Old 05-21-2013, 04:43 PM   #1
Scooby Newbie
Member#: 192375
Join Date: Oct 2008
Chapter/Region: NESIC
Location: Danbury, New Britain CT
2000 2.5rs Coupe

Default EJ255 in 04 WRX, is a tune essential?

I am considering swapping a EJ255 from a forester into my 04 WRX since the EJ205 is now shot. I am planning on using the ECU, intake manifold, TB, and fuel injectors from the 04 EJ205 engine. I am also planing on not using the AVCS so I will also be using the EJ205 cam position sensor and cam gear. My question is a tune essential after the EJ255 longblock swap? or the engine run just fine with my current tune or a stock wrx tune.

BTW the current tune is for 850cc injectors, catless exhaust, and a bigger intercooler, all of which I plan on using with the swap.
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