I'm on my 3rd dynomax ultra flow in two years. Mufler shop has a life time warenty on the mufler, but I just can;t keep a mufler in my 06 2500 5.7 6sp hemi.

Y pipe is gone, mufler has two inlets two outlets x patern in the center of the mufler, 2 ex pipes exit over the rear diff and out behind the right rear tire.

I wanted two seperate muflers to begin with, but I got talked into this design by the shop, mileage is really good, but thiers no rev apeal, the seams on the mufler blow out...

I'm wanting more agressive sound, and I want to keep the benifits of improved mileage.

I do not have any issues with low end torque in my truck, and the tail pipes are not mandrel bent.

Any thoughts on muflers and if having mandrel bent pipes is really going to make a diferance?

 

dude, if u want it louder go buy a flowmaster 40series or run straight or something. mileage isn't gonna be affected very noticably with any exhaust system.

 

My mileage really improved over stock, Thiers no doubt a good duel ex sytem wakes up a hemi and improves mpg, I want muflers that will last....