Originally Posted by
scoooby slayer
just wanted some clarification one way or the other on my thoughts.
from dyno runs ive seen on gtroc the same spec cars are making consistently around 50 - 70 bhp more on dynapack hub dynos compared to brake roller dyno dynamics. now ive convinced myself the dynapck must be reading high or the dd is reading low.
am i right in thinking a mark shead MAD built car had its engine on an engine dyno and then went on dyno dynamics and was within a few hp ?
I have only run once on a dyno pack and the Supra made 872hp at the hubs which I thought wa a bit high,
One of my dealers maps on them he recons about a 10% loss to take it to the tyres is about right to get it to a dyno dynamics fig,
I have run a few from a superflow engine dyno to a Dyno dynamics and they have had 22 to 25% losses if you want to make it to a Flywheel fig,
There own losses is a flat 21ish % so quite close on 4wd cars.
Mark