Just got my truck back from superchips they needed a test truck because there have been 3 reported cases of a programmer not loading correctly, in short dont try to add a tune with any accesories energized( dome light, fans, stereo). The ecm apparently draws one helluva load when a tune is being installed. If you have a weak battery and it dies in the middle of an install it can toast your computer and not even the superchips can return it to stock. The only fix is a new computer from nissan. Anyways i got a free Flashpaq, full tank of gas and rental car for them to test my truck for a total of 8 hours not a bad deal, just remember to always check for testbed vehicles if your wanting something. my friend just got a free bully dog programmer for his new camaro.