Straight pipe for duramax
 

I have a 2007 GMC 2500 classic and I am thinking about straight piping it. Would it be a good idea and if so, what size pipe should I use?

i think the stock pipe size is 3.75 inches a local muffler shop can do it easily, but getting a kit would be easier and you would benefit more from it

is it a classic body style dmax or nbs, that makes a huge difference.

If you Have a short-bed. the kit you buy will have an extra pipe for a long-bed. use that to delete the muffler. :U:

it is a classic dmax . what size pipe dose the kit come in

you can get a 4 or 5 inch system for the truck.

one thing on some lbz's is that when u straight pipe it might throw a code, wont hurt anything, but its annoying to have the light on all the time

ok where can i buy the kit .

In the price quote forum :clickme:

hey i am looking for a straight pipe exhaust kit with the downpipe and the tip. and stuff?

Buy a kit off lukesdiesel... he's got em real cheap... i bet he'll make you a deal on a tuner too... hehe

my brother ran 5" then up behind the cab with 4 - 4" chrome curved tips. 07 DMax. He will have to post his own pics. It is awesome looks and sound