Changing Mufflers on a cat c7

RayChez wrote:
I inquired about the Aero Muffler and the air cleaner that is also part of the deal when installed. 99% of the rvers that posted on that thread that I started said it was NO GOOD. First they said the filter would allow dust to get through harming the engine. And some said the Aero muffler did not increase the power at all on their coaches. So I decided not to invest on such a project. I saved myself $1200. I also saw the vendor at the FMCA rally in Indio, California.

But I know several who just removed the old muffler and installed just the Aero 5050XL resonator, who say that it has helped, but they had big horses, like 400 hp and more. Owner operator truckers have been getting rid of mufflers for years now to get rid of weight and gain power.