I've heard that with a stock exhaust putting stuff in before the catback can make it a lot louder than with new mufflers and such. I'm not sure why this would be true as the stock mufflers always seem to make it quieter, but I wanted to check. Anyways, anyone have any clips of the setup? Another thing, whats the performance gain from 2.5" to 3"? Anything worth it? I mainly want to keep it 2.5" so when emissions times come around i'll be able to buy an easy to fit in cat to use temporarily.

 

i got a RB 2.5 and PS on my 88T2.with stock y pipe and muffler....the exhaust note is louder..but not unbearable....i like it....also backfires when i shift at high rpm(4-5k).....my friends noticed the sound when i didnt tell them about the upgrade.... now my bumper is always dirty

 

What do you think about having the Corksport single exhaust and thr RB DP and PS?

That's what I'm running but I haven't gotten my engine running yet.

I'm hoping it will be as quiet or quieter than my NA engine w/ Bonez DP High flow Cat and CS Single.