My new Procharger came in today after a month and a half of waiting. Apparently ati doesnt' get in any big hurry to fill its orders....don't know if any of you had the same waiting problems. Also I'm not sure what psi kit I got cause it doesnt' say. I ordered 6psi but the pulley is a 3.60, so I'm not sure if I need a bigger size and if so, how much larger of a pulley can I go. Also I'm not sure what the coolant bypass/blockoff valve if for and if its needed. Why would you need to take the thermostat out and block flow with this rigged device? Finally, I was looking at their "plumbing" schematic of the pipes and they have the maf in the "charged" side, shouldn't I be putting this on the "suck" or true intake side? Thanks for the help, I plan to start on it shortly.