sjd78
New member
So yesterday I installed a Dynomax 17263 Ultra Flo Stainless Steel Muffler and a turn down past the rear axle. It seems as though until it warms up it sounds a bit ricey at the upper rpm's before it shifts. Once it warms up it sounds much better. Anyone know if this will eventually improve as I put more miles on it or will it always be ricey until it warms up?