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My car is an automatic. I seem to remember through the years 15% was the accepted slippage in the torque converter. So with 580 hp being the flywheel estimate, when new, the ball park rwhp should be 493. Now we know the driveline gives up more than just tranny slippage so 475 seems to me to be very good estimate if the ECM is in 93 octane mode.
Last edited by forespeed; 07-28-2014 at 01:23 PM.
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