i have my mpi. but dont have it on yet.. waiting for a little more money to buy the hawkec21 system. the tb that came with mine has two looks like 3/8 inch fitting on it beofre the throttle plate .. one goes to i think the brake booster . but the other?,, the pcv valve?.. thanks for anyinput.. when i get along to actually getting this thing on i will peobably need alot of help.. especially witht he management system.., another question would be are you guys using a map sensor?>,, how does this hook up?