i have an 04 cobra with an off-road upr x pipe. do i need both mil eliminator and 02 extenders or just the 02 extenders. UPR is saying i need both but there only out to make a profit
i own an 04 cobra, i have a cai and flowmaster mufflers. what would be the best mod to the exhaust without voiding the warrenty. i really want to go off road but the wife knows too much as it is and if she knows it will void the warrenty ill be in the garage. lol. i am looking for the deepest...