i added a 3" exhaust. After awhile when i floor the pedal my car gets stuck on 4000rpm and starts reving and after like 3 secs it goes back to normal. It happened more than once. Can smone help pls ?
any exhaust is specifically designed for the efficiency of the motor/system/setup, generally speaking. I don't know how much of your exhaust is now 3" (cat back?) but it can greatly alter the flow and fuel ratio and dynamics of the exhaust system. I would wait for expert advice from here or go onto impreza or NASIOC forums and ask for advice on tuning to fix this. Best regards,
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