come on then who is willing to post their wheel figures aswell as their calculated fly wheel figures so we can try and see what the loses are really like on these as looking at the 2 print outs i have jabba have my car down as 18% loses and Star have me down as 37% loses with them looking like this:-

note the frst two figures are running different turbo's etc, the first 2 readings are from 4WD RR and the third is from a 2WD RR.

Jabba:-

wheel - 184.5bhp

fly - 226.4bhp

torque - 352.7Nm / 266.7lbft

Star:-

wheel - 163.5bhp

fly - 263.0bhp

torque - 361.0Nm / 273lbft

JKM:-

wheel - unknown

fly - 240bhp(wasn't running right, made quite a lot smoke which isn't good on a petrol :eek: )

torque - 373Nm / 282lbft

hoping to get the car back on the RR once its back together and running well myself

something is quite obviously wrong as according to the graphs there should be very little in it between the two setups when infact the second (Star) setup pulls much harder and the car is much faster

I have it on good authority that if you add 10HP to the wheel reading and then divide by 0.9 for a front wheel drive,

0.88 for a rear wheel drive, and by 0.84 for a 4 wheel drive the result is approx flywheel power.

The article below has loads of relevant information on this topic.

Puma Race Engines Technical Guide - Measuring Engine power - engine dynos and rolling road dynos

i found that and read it through a few weeks ago but thats quite old and where they talk about 4WD systems they mean things like cossies not a transverse engine with 4WD like an evo and the octavia rather than longitudinally mounted engines.