DC5 exhaust sizing

[BennyH]

Hey guys I'm looking for an after market exhaust for my dc5, I already have headers just looking for the cat back now. Thing is not sure on sizing for it. Its just used as a daily only other mod on it is an in Jen intake that's about it. Heard about 70mm 76mm but just not sure what's ideal for my needs. Thanks guys.

[funworld]

You'd probably be fine with anything from a 60mm to 70mm exhaust. You'll probably fine 76mm exhausts too loud but it all depends on your tolerance for exhaust volume and drone. 70mm exhausts will be louder than 60mm and drone a bit more. If you just want a conservative but nice deep tone, stick with a 60mm jap exhaust.

[JohnnyWalked]

not also about sound but performance too! for a k20 i'd go 70mm since 60mm might restrict some power, if you had a k24 id go the 76mm haha, sound also changes depending what exhaust you put on too spoon n1, cannons, etc etc, if you want it quiet put a resonator in it

[GU357]

2.5inch and u will still only be upping the midrange power which is good for daily.
check flippits DC5 thread, here in noob section, he ups his exhaust and gets considerable mid range gains, great for daily driving.