Not to rain on anybody's parade but the dude is talking about the same sled with new clutching compared to stock clutching. Track dynos are real good at getting clutching close but typically bias the power towards the engine's torque peak rather than at the HP peak. So, some adjustment may be needed on the hill. Also, mfrs aren't the greatest at calibrating away from "home base" at altitude. IP clutching didn't work in the Snowy's judging from my '10 M8. It's good gains have been made but a tad more info is needed; like altitude of the test, what weights came out, what went back in, peak rpms before and after the changes, ambient temp, airbox temp, and other stuff. If it all looks good, then the gain really could be legit and then, crap, you need another 300 bones to get what the factory should have given out of the box...