Originally Posted by msnx2k
At highway speeds I heard more engine/intake than I did exhaust, but I think the valve was not opening. With just a 3in pipe temporarily replacing it I have much more power on the top end... and bottom end.
At highway speeds I heard more engine/intake than I did exhaust, but I think the valve was not opening. With just a 3in pipe temporarily replacing it I have much more power on the top end... and bottom end.
the > 4.0L muffler may have a stronger spring so it doesnt open as easy....?