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Discussion Starter #1
I tried using the read rmp and actual torque settings by multiplying them ( after first converting torque from nm to ftlbs) and then dividing by 5252.
Here's what I got. engine rpm = 5152
actual torque =1056.7 nm = 779.381923165 ft lbs
5152 X 779.381923165 / 5252 = 764.54219 hp.


Am I doing this right?
The dealer said that it was tuned to 611 hp, if it was to the wheels or crank he didn't know and had no dyno sheets to prove it.
I was told to subtract 20% from the crankshaft #'s to get an idea of rwhp. 765 X .20 =153. 765 -153 = 612
 

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Discussion Starter #2
Does anyone know if the torque values shown by the predator are accurate?
 

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I found out who built the motor and added all the aftermarket parts to my car. It's a company called stanghi performance out of lousiana. I talked to Cody who did the work and he was very helpful, turns out it was tuned to just over 500 rwhp which seems a little more in line with how it feels performance wise. I know the formula i used is how you determine hp, but I am very new to the predator and am not sure where or how accurately it measures torque. BTW Cody was very helpful and seemed very knowledgable, he said he'd email the dyno sheets and an aftermarket parts list.
 
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