Firstly lol
Sorry if this is another boring thread people, I just want to make sure im not gonna fook up the engine.
Anyway am I right in thinking that if you are only going to decat just one of the cats, the one to do is the first cat. I hope so as ive already ordered one:rolleyes:
So basically ive got a jspec facelift tt and am looking at just replacing the first cat only, will this be safe to do, am i right in thinking by keeping the second cat in will act as a restrictor.
Any help on this would be much appreciated. Just need to clear this up because some things i read and says decat first pipe and keep second and others safe decat 2nd pipe and keep first cat, which one is it?