hey joe maybe its not mech. its tapped into the trans lines instead of the pan. i looked at the back of the gauge an it has three posts on it i dont remember what they go to?it lights up, needle just dont move :-{} i tried the 175 today just aint seeing a big diff. maybe its because i need to get a drag comp,an its not being fueled enough. i guess just injectors aint cutting it.