Currently, my d16y7 is throwing the Cat code, meaning my cat is not running at full efficiency. I've read that seafoam can clean out various parts of your engine, as well as a cat. Does anyone have experience using seafoam? Would i have to spray or pour it directly into the cat, or just run it through the engine? Any expertise on this would be great, I'm just looking to get rid of the check engine light and pass smog.
