Quote:
Originally Posted by Nightshifter
Yeah I drive it around for a while before I test... which is usually the case anyway since I Have to wait until the street is clear for a run LOL! Launch control worked all the time... then when I disconnected the JB+ to retest the car stock ... it wasn't coming up until the very next day... then it started working again... maybe the ECU reset did something Dunno :/
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If you didn't let the car go to sleep before unplugging electrical components, the car will throw a hidden fault until it sleeps. You should be disconnecting the battery before doing any work on electrical on these cars.