I happen to be fortunate enough to live in the same town as Jimmy from Fuji Racing, he's my Miata mechanic and a godsend. He's been telling me about the IRTB kit for years now and today I finally got to drive it. Holy **** is his car quick! I work for a custom car shop and am lucky enough to drive some of the hottest sports cars out there. But I gotta tell you the IRTB throttle response is unmatched by any of the high end exotics I get to drive. The neck snapping response coupled with a wicked sound made a true believer out of me. Jimmy also has a sweet short shifter that feels just right. Not notchy, real slick and short like an S2000. I'm already getting the shifter for my car, and I'm afraid I have been bitten by the IRTB bug. I was able to drive the car down some back roads and it is everything a Miata is supposed to be, but just better. Great balance, short shifts (Jimmys shifter, tell Sanat to bring you one tonight), and lightning fast reflexes. I was following Jimmy in my wifes Honda Accord V6, and when he stomped on it so did I, and in no time flat he had mopened up a lgap and was pulling away from me. The V6 accord is no slouch either, and I wasn't babying it. Jimmys car just plain dropped me like a bad habit. All I can say is I'm very impressed and thats not easy to do, as I work with exotics and big HP cars on a regular basis. I was gonna stuff an LS1 in mmy miata but a ride in Jimmys car has got me seriously rethinking that plan. Thanks for the ride Jimmy, awesome! Plus get my shifter on the way please as I gotta have it.