~ Already searched and couldn't find the answer. ~

After putting a full turbo back exhaust on a completely stock EVO... the car will run a little leaner , right? no? or it doesnt matter, its not that big of a difference...

....edumacate me puleaze.

just wondering if it is 'necessary' for the health of the engine to do a ecu flash at this point.

tia

 

It would be recommended to do a flash at that point.
My car after the intake, downpipe and high-flow cat ran in the mid 13s AFR which IMHO is not good.

 

ok... thx.

anyone else?

 

yeah,get a flash.