Turbo back exhaust

[909FF/PM]

Will putting a 4" turbo back exhaust system with cat delete through a CEL?

[MrJohnWayne]

Shouldn't throw any codes.

[909FF/PM]

That was what I was hoping to hear. The reason I asked was because the guy at the local exhaust shop stated I would through a CEL because the system would not have enough back pressure. And the EGR would not function properly, resulting in a CEL.

[willypscustoms]

Originally Posted by 909FF/PM

That was what I was hoping to hear. The reason I asked was because the guy at the local exhaust shop stated I would through a CEL because the system would not have enough back pressure. And the EGR would not function properly, resulting in a CEL.

thats total bs it will not throw a code diesels dont need back pressure

[MrJohnWayne]

actually from what I understand there is some truth to that (on 6.0's), the egr/vgt system or something like that but it isn't a very common problem...... I would not worry about it too much

[Rocweiller]

I was told that it can but not will.. Haven't seen one yet with my straight pipe .

[2005F250]

It may through a code but no CEL on the dash.

[guntersxr]

i have a straight pipe on my 6.0. no codes, just a loud *** whistle!

[Deadeye_88]

i have a straight pipe too. i dont have any problems.

[darsey715]

it's spelled THROW, fyi.