I just bought my s2 about a month ago and im thinking about adding an exhaust. I dont have an owners manual yet and im not a car nerd so i have no idea if it should be tuned or not. I'm pretty sure it only needs to be tuned after something major is changed to the engine but i just want to play it safe. Please let me know..

 

a tune after just an exhaust isn't necessary . . . if you added a test pipe, i'd maybe recommend it because you don't want to lean out at higher RPMS . . .but it's still not a necessity at that point . . . tunes don't become absolutely necessary until you boost, or start messing with internals, cams, etc.

 

oem everything + aftermarket exhaust = no

 

How do you "tune" a basic stock S2K again?

 

alright cool, thanks for the feedback guys..