Mexburito
08-13-2004, 07:39 PM
I just got a Magnaflow muffler with two cats removed off my 03 L with 12000 miles. As soon as I left the muffler place it began to pop and bog down whenever the supercharger kicked in. I left it alone for a week and assumed it was the two O2 sensors not reading right because of the cats removed but when I put a set of Steeda O2 simulators it did just the same. I really do not know much about these trucks and any help would be greatly appreciated. I was thinking, maybe my spark plugs were fouled from the little time I drove it but I really do not know. :(