08 duramax exhaust

[mikesiena268]

Hey guys I haven't put up any new pictures of our new truck, it's a 08 gmc, I don't want to put a tuner or even a full exhaust or cut the particulate filter off or anything, but I'm looking for alittle more sound without any codes.... The truck doesn't have the black box, it's earlier 08 year so not the full emissions bullshit, if I just cut the last muffler off and put a straight pipe in there, would there be any codes? Or has anyone done this? How's the sound difference? And is there any websites the have a section of piping for that? I really wanna keep the stock exhaust look... Thanks for any insight!

 

[Harbin_22]

On the DPF equipped trucks, removing the muffler makes pretty much no difference in sound. It will not set any codes with just the muffler removed either.

 

[Ne-max]

All 08s have the emission bs on them. Early 07s dont. Get a cat back aftermarket system will make it a little louder without throwing codes but not much. The dpf reduces noise a lot. I would not hack up the stock exhaust if I was you.

 

[mikesiena268]

Well then what's those black boxes that they started putting them on in 08? Because we have a 08 freight liner sprinter without the emissions shit I'm pretty sure

 

[Ne-max]

Are you talking about a urea tank?

 

[THEFERMANATOR]

Had a friend who put a straight pipe in place of his stock muffler, and it really made no difference in sound. Only way to really make one louder is to remove the DPF.

 

[mikesiena268]

Yeah the urea boxes.... And hmm alright so it seems its not even worth it! Whatever I guess it will stay on until my dad buys a dually and then the fun will start lol

 

[ikeG]

If you take the muffler off any DPF equipped pickup, it makes hardly any difference in sound. The DPF is obviously very restrictive!

 

[duramaxJoe08]

Spend the 300 bucks on a diamond eye system efi tune it...
Then you will buy a down pipe after this they sound great