If you want power,,,better change your gearbox. Bcoz in real life your horsepower is around 140 only:regular_smile: ,,,the auto gearbox has eat 'em'.markii said:i plan to modify my exhaust system and wish to get some of your opinions and suggestions. my car produces around 200hp and its an NA. i plan to change the piping to a larger diameter but i have heard people say it will affect my cars acceleration. so now what i have in mind is just replacing the cat and join it up with piping. will it be noisy?? btw how much does it cost to do this?im on a budget of rm500. tq
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it has an auto transmission btw