Just bought a Duramax

Vintage465 wrote:
So I got a ton of great info here but I need to state my reasons for asking these questions. I am not "looking for power". I think pulling a 24" trailer @ 5200 pounds this dude shouldn't need more power. What I was thinking is making the engine more efficient and better. I was thinking, if a Banks Ram Air system could lower EGT by forcing more enriched oxygen into the intake then that would be something I could justify. If the better intake provided better mileage that would be cool too. I know I would not really get a payback on my investment in any short amount of time, but one must remember, I keep my vehicles for a minimum of 15 years. Regarding the exhaust, the only thing I am looking for with that is to get rid of the gigantic and exceeding ugly exhaust tailpipe. I can't really believe someone at GM got done with that tailpipe and said, "there...that's workable and nice looking too"! So my reasoning is better flow for cooler exhaust temps and more efficiency if that comes along with it.....and gosh the ugly exhaust pipe!

thanks,

All the backpressure in the exhaust is in the CAT and DPF. Putting a DPF back exhaust on does nothing for flow... Its just a pretty $400 exhaust tip. You could do the same for a lot cheaper at a local muffler shop but you still need to keep the stock venting. There is a reason the stock tip is so ugly as it aids in cooling the extremely high temps which occur during regen.

Here is a good thread on some exhaust tip options that retain factory cooling http://www.duramaxforum.com/forum/2011-lml-performance-parts-discussion/137033-no-more-ugly-tip.html