well give or take a hundred, but like i said it does engage around 6500 i can actually hear when it engages unlike most d-series where you can barely hear it if at all. but i thought it was suppose to engage at 5500?? or am i wrong. either way idk and would like to figure this out before i swap the motor. i plan on putting it in a ef hatch sooner or later and would like to have it figured out before hand. let me know fellas, thanks again.