Hey guys wantin a little advice here on what to do. Im thinking of taking my muffler off and straight piping it. My truck has 4" turbo back exhaust (aftermarket not sure of brand) with a 5" tip. My question is.. is it going to do anything perf wise and how much louder will it be not too worried about the loudness i do like em louder but not sure if i want it loud all the time. like going down the road at cruise. I drive 20mi to work one way every day at hwy speeds 65-70mph. So if any of you guys have any thoughts on this let me know what you think to do what would be better. Leave it alone or straight pipe it????

 

I have had stacks on my truck now for about 6 months, straight piped. Even still I can cruise down the highway at 70-80 and just barely hear any engine noise... There is some, but its not horrible(back seat is a little different though). A lot of people have straight pipe coming out the back of the truck, and its not really too big of a deal. I had mine straight piped before getting the stacks and going down the highway the only way I could hear anything is with the windows down or if I drive up next to an object.

 

Straight pipe... It'll drop the EGTs a little and noise wise, its only a little louder than a 4" with muffler. I think it sounds better straigh piped especially once your in the powerband. As for freeway driving, its not really noticable over the stereo and with the stereo off, its a slight drone but not real annoying

 

Ok cool thats what i was looking for thinkin with going with the strait pipe. My buddy has a 99 cummins and said when he bought it, it was straigt piped and he said he couldnt hardly drive it was too loud. So thats why i was askin can always put the muffler back on anyways. a project for the weekend
Thanks TXaustin and rkadcock will let ya know how i like it prolly sat night

 

my first gen straight pipe all the way to the back sounds good to me but didnt always wear proper hearing protection when younger so i say huh what did you say alot !!! and my wife is always telling me i need hearing aids even when i heard the first time she says i have selective hearing sorry got off of subject.I like the sound of all trucks are straight piped mostly the ones you drive for a living

 

straight pipe! no question! mufflers are way to quiet and besides with you running the exhaust out the back it will have a real nice tone but not that loud in the cab!

 

I gonna do it if i can get off work early enough tonight went to a buddys shop he had some 4'' pipe and he swedged it on one end for me so gonna go for it will let ya all know how it is tomorrow hopefully if not for sure its going on saturday

 

Good luck doing it tonight! I think you'll like it

 

Well guys i got it done started on it when dinner started cookin and got it all done by the time the pork chops and taters were done. And let me tell ya what i dont know what i was worried about is sounds fricken sweeeeeeeet!!!!!!! i love the way it is sounds about the same at idle and cruise but when you get on it man give me chills the first time i heard it grinnin from ear to ear like the sound when you get on it and the let of can hear the turbo windin down and the whoosh sound out the pipe. Thanks guys for all of the positive advise glad i done it now insead of waitin pretty stoked about it like a giddy little kid man gotta love the CTD no doubt about it cant go wrong

 

I'm straight piping mine as soon as I can afford it. My Dad's GM 6.2 is louder than my truck.