just throwing this out there for those who dont know. i just had a bad expeirence with mine. driving down the interstate fine. traffic got thick coasted in neutral. truck was idleing completely eratic . sounded like i had a huge cam and every injector was rattleing so bad sounded like the motor was toast. i instantly jumped 3 lanes of traffic shut it down checked for leaks nothing. checked the wireing at the fuel pressure sensor nothing was wrong. started it back up banged on the box it started leveling back out. shut it off un hooked the puck. plugged the harness back to the sensor through the puck in the back of the truck. fired her back up purred like a kitten. so just an fyi the puck is a hunk of crap