Quote:
Originally Posted by Can'tHave2MuchHP
Yeah, have to wonder which is more accurate.
Thinking out loud here...If the car has 580 true HP stock, should be at about 485-510 stock, picking up only ~49 WHP (If we use the middle number for stock WHP), seems light. On the other hand, 581 seems high, I'd think you'd need cat-less headers to achieve that.
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It was a dyno that was set up for both, run back to back..
"The superflow system uses something called eddy brakes to use inertia against the rear drum to simulate the road. Dynojet does not. One of the arguments I have heard is that while the superflow may be a more realistic number of horsepower on the pavement its not very good for engine horsepower readings. Meaning there's another variable to calculate actual engine horsepower that is thrown into the mix and if a dyno is not properly calibrated this will only add to it. The thing that superflow has been doing lately is adding the "dyno jet" comparison to the software so customers can see the difference. But as I said if the original number is off due to calibration making additional calculations will only make it worse. Supposedly a rule of thumb has been to expect a 10 to 12 % lower reading on a properly calibrated superflow. "