i installed a pypes x-pipe with cats on my 02 gt and was wondering how long will it take the computer to recalibrate since the battery was disconnected while doing the install ? also will it go back to the stock tune or back to the custom tune i had from my sct excalabrator before the install? also, it seems to be running very rich when i statred it up.is this normal with a new system not yet driven ? also i goosed it a little and it didn't feel like normal,thats why i'm wondering if it lost the tune? will i have to change any settings on it when it runs good again supposing its something like the computer recalibrating ?answers to any of these questions would be appreciated !