My brother ran Flowmasters on his motorhome and he found he had to choose between a set that performed well and was too loud or a set that was quiet enough but hurt performance and mpg.
My suggestion would be to try some Walker Dynomax Turbo mufflers. I've seen some flow bench tests that show they also flow very well and don't cost nearly as much as the Flowmasters.
My suggestion would be to try some Walker Dynomax Turbo mufflers. I've seen some flow bench tests that show they also flow very well and don't cost nearly as much as the Flowmasters.
