The Hurst solenoid valves included in the PHP kit have a release time of 1/100,000 of a second. A good drag burnout should warm and clean your tires, not fry your rear brakes. But unthinkable ...

A burnout is pretty easy to do, but it's a lot easier with a line-lock. A line-lock allows you to lock the front brakes independently of the rear brakes, so the car stays put while the tires smolder.

The feature was previously only available on the GT and GT350. Line-lock holds the front brakes for up to 15 seconds, allowing a driver to spin the rear wheels in place. The feature was added so drag ...