Originally Posted by Aquafina
Depends on the type of dyno.
Yes, I agree.
Our dynos are the roller type where the cars are tuned under load, but the power runs
are on inertia.
I stand corrected, but I believe the rollers calculate the engine power in gear, then they
calculate the weight of the drivetrain when the rollers are still spinning and the car is in
neutral. The difference gives you a wkw reading.
Hyper Power dyno if I recall correctly.