5 inch exhaust

[FoMoCoBros]

Hi, i am new to the forum but found ALOT of usefull info. In fact i am ordering my KEM tuner in the next few weeks. My question is this: Does anyone make a full 5 inch exhaust from the turbo back for the 6.4? I bought my truck as a write off with only cosmetic damages for about 1/3 the price of new. Now with that said, i have no warranty so i am not worried about voiding it with new exhaust. And if no one does, i have a friend at a muffler shop that said in the event that NO ONE makes one, he would make a new downpipe if possible and we would try and mate it to a 5 inch exhaust from an 07 or earlier year that has a full 5 inch.

[westcoaststrokin]

to the ORG!! The resident mod experts on the 6.4 are twinturbostroker and richardndawnc I am sure one of them will be along to answer your questions.

[06TWO50Diesel]

Welcome!

Sounds like you made out very well! I'm pretty positive no one makes a 5" system for the 08s yet. MBRP only has DPF back 4" system available, and most other companies are the same.

Since you're ordering the KEM, I'd talk to the exhaust shop and have him fab up some 5" exhaust for the rig. The size of the pipe is just that, size, it won't give any more performance than a 4" until you start running BIG power, and even then, it's only minimal, to my understanding. Sound wise you may get a bit more turbo, and from the twins, that'll be nice! With what you're saying, any exhaust can bolt up to any truck really, and since it's the 08 and you're deleting stuff from it, you should be able to run a 5" with no problems.

let's git r done!

[bigcountrysg]

The only thing I would be worried about is emission tests that may need to be done. I don't know your location but I know alot of the states are starting to make diesel trucks be emission tested for registration purposes.

[FoMoCoBros]

Thank you. That is pretty much what i wanted to hear. The only reason i am looking to see if any earlier trucks running the 5 inch exhaust are a close fit is because the exhaust shop doesn't have dies to bend the 5 inch. Our plans were to use mandrel bent 5 inch pieces to form the downpipe from the turbos in sections and weld it together and hopfully mate it up to some other companies 5 inch system. Other wise i would need to use the mandrel pieces to form the whole system.

[06TWO50Diesel]

Originally Posted by bigcountrysg

The only thing I would be worried about is emission tests that may need to be done. I don't know your location but I know alot of the states are starting to make diesel trucks be emission tested for registration purposes.

True true! I second that, so don't just scrap your old piping. Hold on to it, and when inspection comes around, bolt it up, once you get the 'go ahead', head home and slap on the 5" kit!
I live in New Jersey and it's no fun. I used to do it with my mustang all the time, had 2 different mid pipes; one with and one without cats. Worked like a charm

[FoMoCoBros]

Originally Posted by bigcountrysg

The only thing I would be worried about is emission tests that may need to be done. I don't know your location but I know alot of the states are starting to make diesel trucks be emission tested for registration purposes.

I am so far up north in Canada that they welcome smog and global warming. And i actually did have a vehicle pulled off the road for a "full" inspection and at the VERY BEST, they look under the vehicle to see if there is full exhaust. Most of the time they just look for a tail pipe

[bigcountrysg]

Originally Posted by FoMoCoBros

I am so far up north in Canada that they welcome smog and global warming. And i actually did have a vehicle pulled off the road for a "full" inspection and at the VERY BEST, they look under the vehicle to see if there is full exhaust. Most of the time they just look for a tail pipe

Great so your going to be the reason why there is not an ICE ROAD TRUCKERS season 3.

[FoMoCoBros]

Hey, we could share this blame with the other 18 Canadians that run diesels instead of dogsleds up here HAHA

[TwinTurboStroker]

Originally Posted by FoMoCoBros

Thank you. That is pretty much what i wanted to hear. The only reason i am looking to see if any earlier trucks running the 5 inch exhaust are a close fit is because the exhaust shop doesn't have dies to bend the 5 inch. Our plans were to use mandrel bent 5 inch pieces to form the downpipe from the turbos in sections and weld it together and hopfully mate it up to some other companies 5 inch system. Other wise i would need to use the mandrel pieces to form the whole system.

Well there is a 5" DPF back exhaust from Magnaflow that I have.....and it is a tight fit, but it will fit.....but no, no one makes a 5" from DP back exhaust