straight pipe exhaust

[mr.mincas]

I have an 03 duramax and was wondering if its okay to replace the stock muffler with a piece of pipe. I plan on getting a turbo back kit, 5 inch, t304 ss from mbrp but just wanna see how much better it performs than stock just by replacing the muffler with a straight pipe. Is it harmful to not have any kind of muffler to produce some back pressure?

[deeretracks]

Wont hurt a thing...

[wildturkey_hunter]

I dont think you'll notice much performance gain. But it wont hurt anything.

[mr.mincas]

sounds good, but i had heard that it may allow the turbo to spin too fast causing melt down. thats what i was concerned about, especially since i work it hard

[deeretracks]

Originally Posted by mr.mincas

i had heard that it may allow the turbo to spin too fast causing melt down.

Never heard that one before

[mr.mincas]

whats a good and affordable exhaust kit, turbo back, that i can get for my 03 duramax short box, ext cab? im lookin for better performance but also want to gain fuel mileage

[deeretracks]

You wont gain anything but lower egt's with stright piped exhaust.

[mr.mincas]

Originally Posted by deeretracks

Never heard that one before

well i guess that was an issue with a few dodge cummins i think so the guy that told me thought it mite be something to worry about in the duramax as well but if not, then great

[BigRedChevy]

Won't hurt a thing. You will love the sound too.

[SmokingD's04]

I have a 04 LB7 with stock striaght pipe. I didnt notice any performance gain, but have not had any problems. It sounds pretty good that way too.