I would like to know , what to do & gain my engine HP ?
Basic things that i been done : Header , Full exhaust system , Head PnP....
Any suggetion r welcome.
helo all, i'm using 4g93 n/a engine with slight mods & recently dynoed my car and noticed that my hp had gone down from 136hp to only 116hp. can anyone diagnose my engine's problem as from the dyno result the a/f ratio was the same as before. thanx in advance.
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