I have the predator, and the 60HP setting makes a world of difference over stock, but I myself am going to get a Jody chip as soon as the money is in the bank for it. It is true, this thing wil knock the needle off the pin on EGT's in no time flat. The 80 and 100HP settings actually produced less power, probably due to boost setting the SES and defueling. I got a great deal on the tuner, and since it was winter time, and I didnt want to mess around with the PCM, I bought it, and dont regret it(provided the tranny isnt fracked from it). I can still use it as a scanner if I dont sell it.