I put a set of the Flamethrowers in my runner a while back and man what a huge mistake. Three out of six of were way too rich and one of them was just dumping fuel. The spark plugs were just soaked and it was so bad it clogged my cat. My mechanic had some now CA outlawed system cleaner and running that (after having to reinstall my old injectors) cleared it right up. Sorry man, it may mean that you need to swap those junk injectors and then run the best cleaner you can find to clear out your cat.