A mass air flow sensor is one of the numerous tiny widgets and gewgaws that make up a modern automobile's electronic fuel injection system. In the MAF's case, it tells the car's computer how much air ...

Since the inception of GMHTP's LS1 project car, we've cut a full second off its ET (13.36 to 12.36), added 6 mph (103 to 109) to the trap speed, and added 55 horses and 48-foot pounds to the wheels.