Question 1

What is the ET method?

Accepted Answer

The ET (Elapsed Time) method uses your 1/4 mile time and vehicle weight to estimate horsepower. It was developed by drag racers and is surprisingly accurate for consistent runs.

Question 2

WHP vs BHP vs crank HP?

Accepted Answer

WHP (wheel HP) is measured at the wheels on a dyno. BHP (brake HP) / crank HP is measured at the engine. The difference (12-18%) is drivetrain loss.

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