Originally Posted by civicandtegra
gsr i realized the light setup was different on my 91
and if u have a friend that can weld get a flowmaster or borla muffler and build a 3in full exhaust its not as hard as it sounds, if i can get my stupid camera fixed i will post a pic of it
i like that hytech its got a pissed off growl
listen to the mugen 1 i think the guy redlined it cuz i thought i heard something tapping
Don't do 3in pipes unless you have forced induction. 2.25 is about perfect because exhaust comes out in waves of high and low pressure and the low pressure waves suck the high pressure waves down the pipe in a perfectly straight line. If you get bigger pipes, the waves will go all over the place in your pipes and won't suck each other down the pipe. Also this means that the waves won't suck each other out of the cylinders and into the exhaust manifold, leaving loads of crappy, used up, heated air in your cylinder. This means a loss of power.
If you have forced induction (turbo/supercharged) these waves will be bigger and more frequent and you're fine with 3 in pipes.
There's a happy medium in exhaust pipe sizes. you don't want something restrictive, but you want do something that will keep everything in order.