Kenzo, poke around Youtube. There are a bunch of clips of 3" exhausts on there. My exhaust is nowhere near "too loud".

 

Sorry, I was having a blond moment.

I ment to say ther would be no major power gains 2.5 to 3.0" at low boost levels.

However if the long term goals (as always) is to have more boost, then get the 3"

 

dont get an exhaust yet, wait till you're turbo. i have a 3" with hi flow cat and magnaflow muffler on mine and its super quite with teh turbo....like when i'm slamming gears it sound like a honda with a fart can cruising in 5th at 2k rpm (not same sound but sound level) paul can vouch that it sounds good. just wait it'll be the best thing you can do

 

I suggest getting a 2.5. Not as loud as a 3.0, and you should consider a high-flow cat.