I just had my exhaust installed and I know they disconnected the battery but would I have to retune the stang with the diablo tuner again???
If you added LTs you should get retuned. If you just pulled the battery and installed mufflers or midpipe then you dont need a tune.ok good I gotta say the LT's xpipe and exhaust was a big gain I noticed it all the way through the rpms. I noticed I went through gears quicker and gained mph higher.