Quiet 4" exhaust, what brand?
 

I want to put on a 4" exhaust on my 02 cummins. The truck is very close to stock. It has a quadzilla adrenaline (Bluetooth) programmer and an airdog II. I've ordered the big line kit so I can mount my fuel pressure sensor. Currently, if the programmer is turned up over 3, it runs the EGT very high at WOT. I've set the defuel function to keep it below 1300F which it does.


I am using the truck on a farm and as my daily driver to work. I want to tow with it and also use it when going to job sites (I'm an engineer). So, I don't want it to be super loud or at least not any louder than it already is in the cab. I think that I want a straight through type muffler. I used to have a 95 F-250 with straight pipes that wasn't that loud, but I've heard the cummins is much louder without a muffler. I'm willing to pay more for the stainless as I don't want the exhaust to rust out after I spend the time and effort to install it. Lastly, I want one that comes with all the hangers in the correct places that I can install myself if I want to. It doesn't look especially hard to do, I used to do a lot of exhaust on 5.0 mustangs and this looks simple by comparison.


Any recommendations?

I run a diamond eye 4" from turbo back with a Donaldson 51" straight through muffler. Very quiet. The biggest thing about VP cummins is they are, from what I have picked up in the last 2 years, the loudest cummins ever made. That said I ran straight pipe for the longest time, but grew tired of having to yell after cutting a hole in the floor for my trans swap. But since then the Donaldson has been very quiet.

Thanks, that helps a lot.

Does Diamond Eye come with hangers? The pictures never show them when you look at them for sale.

Yes it comes with hangers, clamps, and rubber bushings.

For information, my tire shop talked me into pro-flo exhaust with the muffler. It's 4" and I'm very happy with it.

Cousin here is considering for 4" exhaust kit as well and heard about Pro-flo. How's it on yours so far? Got some vids on how it sound?

I don't have any videos, but it sounds relatively quiet. It's a little raspy, but not as much as a 5" with no muffler. It sounds pretty deep overall and I like it. It did lower the egt's by over 200F. I still hit high egt's with the programmer turned up past 5 (out of 11), but it's a lot better now then it was. So I don't turn it up all the way. Pulling it stays between 700 and 1100 with my big 5th wheel camper.