I just received a "chip" off of internet that states i will get up to 35 more horses out of my xlr, it is a resistor that plugs? into the Intake air temperature sensor plug in place of the stock sensor, it supposedly keeps the computer fooled that the air temperature is at a certain prime degree. i can set it back to stock in about 2 minutes if i have to take it in for warranty. anyone have one of these? i got one for my gmc truck as well.