Switch to dual straight pipes

[Rawze]

it being a 2007.. is this a CM871?... if so then ...

First of all, your post implies that your truck is de-mandated(deleted).. if that is the case then the programming should be looked at first if you give a damn at all about that engine. bad de-mandate programming is a plague and will destroy your engine over time. it is nothing to take lightly at all. pull a copy of the program out of it and sent it to me for a review. You also should NOT be getting egr codes if it has been properly de-mandated.

if it is in fact de-mandated then ...
NEXT>... if the exhaust system was properly dealt with (gutted completely) then you should not have any exhaust restrictions that would warrant any sort of exhaust modifications at all either. Not even if it had 600+ HP on the engine. This means that again, your post implies that someone may not have done a proper job of hollowing everything out 100% to the bare metal and now the whole exhaust system is restricted. The exhaust piping is more than adequate for that model truck to handle 600+ HP. It is NOT restrictive at all. There should be no difference in power or performance on the engine with the exhaust connected on that model truck, even at 600+ HP .. or with it disconnected off the back of the turbo, especially if it has been properly DE-mandated and the canisters correctly hollowed out.


Your whole post smells heavily like a complete s%it job, engine killing delete that was done half-arssed to me... and now your trying to band-aide problems that someone else created.