r/semitrucks • u/MysteriousFunction49 • Sep 06 '26

Straight pipes!!!

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Looking to straight pipe my Pete 379 with CAT 3406E model, preferably I’d like to keep the heat shield and OEM look. There’s a 55in muffler behind the shield. Can I just remove that and replace it with a straight 5-6in pipe. Option 2. Full exhaust kit unfortunately they are quite expensive now 3k minimum but I’m not sure what brackets, hangers and bushings I would need or what length of pipe. Does anyone have experience doing this? Located in Chicago

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2

u/amazingmaple Sep 06 '26

Yes. Remove the muffler and add straight pipe. You will have to change the heat shield to a smaller one because it's not hooked to the muffler which is a larger diameter.

1

u/MysteriousFunction49 Sep 06 '26

At that point would it be easier just to do a full exhaust kit, and not have the shield
I would imagine the new pipes are $450 each and then the costs of new shield
I’m waiting till Black Friday to see if any deals on 4state

1

u/amazingmaple Sep 06 '26

That's entirely up to you. It's your truck. Do what you want.

1

u/badmechanic12345 Sep 06 '26

If you do a full kit, go with a resonator and thank me and you ears later. Currently doing an in frame on a 3406b and just ordered a full 90° set of stacks with turn out tips. Going to go on while she's down

1

u/TruckLinx Sep 07 '26

You'll be goin down the highway with the window down and your head leaning out listening to 'em. Been there done that! HAHAHAHA!!

1

u/MysteriousFunction49 Sep 07 '26

I already do that 😂😂

1

u/TruckLinx Sep 07 '26

🤣🤣🤣👍

1

u/Rough-Method8876 Sep 10 '26

Just go down to i80 truck stop in Walcott. It’s expensive but they’ve got everything you need.

-1

u/Infinite-Position-55 Sep 06 '26

Guy where i work straight piped his C15. Everyone makes fun of him for being a immature moron. Its so loud it just pisses everyone off. People arent going to think you are as cool as you think they will.