cnitty
Senior Member
I just upgraded from an Flowfx to the https://www.borla.com/products/proxs_3_center25_dual_19x4x95_muffler_part__40349.html
Also got rid of the factory y- pipe rerouted it past my transmission which equaled lower transmission temperature also.
I immediately noticed a more responsive truck had them both done at the same time so can't say if it was the Y pipe reroute muffler or both.
Also got rid of the factory y- pipe rerouted it past my transmission which equaled lower transmission temperature also.
I immediately noticed a more responsive truck had them both done at the same time so can't say if it was the Y pipe reroute muffler or both.