what type of bike is it? im probably wrong but to tune u would probably need to re-map or power commander if it is newer... kinda like a fuel managment system, i dont know if you can get adjustable fuel pressure regulators for bikes, but i have one laying around for a car... i dont know what the big difference would be, it's pretty universal, 1 in line and 1 out. and a mounting bracket... that's it... bret what do you think?