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Old 05-06-2006, 03:24 PM   #1
Scooby Newbie
Member#: 114309
Join Date: May 2006
Default Hickup/backfire on tip-in

When tiping in from idle my car has a hickup and some times makes a pop. It shows up in the logs as the ecu pulling timming for a split sec. Any ideas what would cause this?

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Old 05-06-2006, 04:45 PM   #2
Scooby Specialist
Member#: 57882
Join Date: Mar 2004
Chapter/Region: MWSOC
Location: Chicago
2004 WRX


I had to lean out the 0% fuel column. It was too rich and the car would rev, almost pause at 1000 rpm and then continue revving. If you know anybody that can check your fuel trims, then you could see where your long term trim is. Should be +/- 5%

Why are you running a 20G on STi injectors? Do you have alky or something?
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