I'm thinking about taking off my kinetix hi flow cats and putting the stock ones back..I'm curious if this will affect my tune...Currently have a unichip piggyback on board that was dyno tuned...rest of the engine and exhaust mods are in my sig...

 

why have stock cats with aftermarket hearders...? might as well put the stock headers on...

 

I eventually will be going that route....Just don't have the money to change the headers just yet....reason being for the changes is i need to take it in for oil consumption testing and don't want to give them(dealer) any reasons to blame my mods....BTW car consumes about 1.5 qts per 3,000 miles...Not bad(compared to others) but enough to qualify for a new motor per the recently issued TSB.....

 

if your going for oil consumption testing... id put all stock parts on... the dealer is going to give you a hard time about the mods

 

Engine and exhaust mods will all be back to stock before taking to the stealership......Probably will be ready to take it in by may or june....

 

the A/F ratio will change to rich

 

Yea, you need a new tune once you remove your HFCs. Or what you can do is remove the Unichip.