Today I had a 4" exhaust put on my truck (see info. in sig.) and the first thing I noticed was the sound, it sounds like my diesel truck has been converted to a gas engine with dual exhaust on it:mad: . I like the "whistle" of a diesel, not that mine was loud by any means, I just wasn't expecting mine to turn out the way it did. Should I add the air intake now to get that more whistle sound or is that a waste of money?:confused: I have a K&N air filter that you pop in the original filter box but, no real air intake to speak of.

I got 4 inch on mine and think its not that loud either but others tell me it has a tone to it but i cant tell lol maybe once the exhaust gets broke in better it might come alive too

the lb7's just have a different sound. A metal cold air intake might help. btw "We have but one rule here. We will all behave as gentlemen." Robert E. Lee

afe stage 2 with the metal pipe will help alot, my lb7's turbo sings

I'm with ya. I did the same on my 02 lb7 with the same results. Now it sounds more like a gasser....kinda sucks