The only thing "wrong" with my Dynojet 224X is the pendant that activates the "sampling" of each dyno run made. If my dyno were "off" 100rwhp, then my cars are making some "EXTRORDINARY" horsepower. I checked my dyno with a similar Dynojet 248 and we were within a few horsepower and torque of eachother. Congrats to David and Levin for a kick a$$ Viper which made 913rwhp heat soaked after a multiple attempts. Apologies for the malfunction, David!