I have 3 friends with dynojet dynos they are the best in the industry. They are inertia based dynos very accurate. They calculate their hp # on the ability to accelerate the mass of the roller. Based on the rate of acceleration of the roller is how hp #s are established. I have performed back to back dyno pulls on one of my Ford Mustangs. On the dyno jet it made 596 rwhp on a mustang dyno (eddy current style dyno) it made 617rwhp. The 617 is great for bragging but I trust the dyno jets number as the real number. I will talk to them and I am sure I can make a dyno day happen this winter.
Steve Meenan
Steve Meenan