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Old 03-17-2008, 08:24 PM   #1
Scooby Newbie
Member#: 155583
Join Date: Aug 2007
Default Just finshed a 2.2L to 2.5L SWAP..HAVING ROUGH IDOL PLEASE HELP

I have a 1996 impreza and swapped in a 1998 legacy GT 2.5l DUAL CAM motor..Everything went well except it semm to idol rough almost like a miss in the motor....I added headers and some pre gapped irridum plugs and a cold air intakee..I swapped out the 98 gt ecu and the mass air flow into the 1996 impreza.Anyone have any tips?...Thanks
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Old 03-17-2008, 09:21 PM   #2
Scooby Guru
Member#: 5218
Join Date: Mar 2001
Chapter/Region: MWSOC
Location: SAUL'S Motorsports
96L Most Over-
Developed Beater


Vacuum leak?

Was the car an EJ18? If so, you'll need to run a wire and pin the ECU plug for the knock sensor. That shouldn't effect idle, but will be noticable in a constant CEL as well as dip in power during accelleration.

Jay Storm
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