if i install a CAI, L/T headers, and a cat-back w/ x-pipe without a dyno tune, will i be doing any harm to my car?
i want to be able to swap the old exhaust system without having to retune it everytime for smog tests later down the road. I live in california.
i want to be able to swap the old exhaust system without having to retune it everytime for smog tests later down the road. I live in california.