Twenty4/7
Well-Known Member
- Joined
- Dec 16, 2020
- Threads
- 0
- Messages
- 64
- Reaction score
- 136
- Location
- Central Florida
- First Name
- Robert
- Vehicle(s)
- 2021 RR GT500
been dynoing cars for the last 10 years or so. 18% isnt really the norm for newer cars especially "sporty" ones. i think drivetrains have become more efficient AND sae hp ratings have changed in the last 10 years equalling lower advertised bhp. so being closer on the dyno to advertised bhp makes sense.Depends on your driveline loss factor. For RWD, big tires and a roller dyno? 18% is common. Using that at 470 RWHP you get over 570 crank. Closer to 600 than to 526. I bet the car has a real 550 crank.
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