What is up with kenne bell superchargers they are really rude, and also my buddy was having problems his kit for the 4.0 jeep wrangler they told him that he was S.O.L. and that they quit the kit. Well he got it all tuned out by finding another guy who had the same problem. Any way he called to register the kit and they also told him that they wont do any parts replacement or any tech support even if he was to pay because they dont do that kit any more. Any way I feel they are jerks and almost a rip off because my buddy bought this kit a few years ago and they just treat it like ford treats us but they were rude and acted like they dont care. I say screw kenne bell they cost 5-8 thousand dollars and they dont help you out at all. At least with tork tech you get a good price and you know you can get parts. Screw kenne bell!