I just bought my 2003 cobra and i was looking around under it today and I noticed the previous owner had installed an xpipe and had the factory h pipe removed. I thought it was kindof odd because they seemed to have welded the xpipe into the hpipes position and the car seems to still have the stock cats. Maybe they kept the cats on for warrenty reasons. I want to cut it all out now and buy a catted maggie xpipe but I dont think ford warrenty would like that at all. Has anyone heard of anyone doing this? Anyhelp would be much appreciated!