i have a nice set up 2.7, 60lb injectors..... but i have stock exhaust, if i get it tuned with the stock exhaust wen i get full exhaut would i have to get it re tunned?

 

Im pretty sure its not compulsory but will net you more gains.

 

I don't think you could really gain anything from a re-tune with it, But I'd say put the exhaust on 1st then tune... that makes more sense to me....

 

2.7 with all stock exhaust? *GagGaspChokeFart*

but no, an exhaust wont require a retune, nor will there be any gains had by messing with the tune after the exhaust.

it will just let the engine breathe more efficiently, lower boost and heat levels a little.

 

aight thaks yall i havent got anything install yet i think i can wait about a month till i got enough money saved the exhaust