Depends craig on what the chip is mapped for, you would need to make sure the injectors your using is the same this chip is for & turbo as well t34/48 , t34/55, t34/63 & what comp ratio this chip is for. You can phone msd with the serial number on the chip & see if it matches your engine & turbo spec. This is the way to go tho l8 with board & coil pack driver coil pack makes some dofference to a cossie woulcnt have one without coil pack kit now