Originally Posted by Musclefan21
accurate calculation should be based on 15%. So 200rwhp divided by 0.85 = 235.
.71 is a little over kill in my opinion Franc.
my GT putdown 260rwhp, with .71 it would be 360hp. which is not the case at all.
my cobra put down 455rwhp. with .71 it would be 640hp which was definitely not the case.
a 154rwhp tells me the car was overrated if everything was ok with the engine.
Didnt gary put down something like 17x to the wheels stock? I dont remember that exactly.
I'm sorry. That was the dyno numbers used for the pretune and mod base line. Same for the final line. The porpotions should be the same. Regardless of the multiplier.
To get 200HP to the wheels on a car that had stock 154 RWH and 215 HP at the crank, requires 285 at the crank. Using the same dyno of course.
Not an opinion.
Putting that integer , 0.71, into a formula for another unrelated car is silly math.
That, of course, is an opinion.
On another dyno the car could get a higher RWH. Therefore a lower power loss. But the same proportional change in the engine.
So, with that said your 15% could be right. But at the moment it too is an opinion