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Old 04-23-2012, 11:49 PM   #17
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Join Date: Feb 2012
Location: Michigan
Posts: 42
My Ride: e39
They didn't tap into an ignition coil, so engine speed wasn't recorded. The tech said it was a low number and should be higher if engine speed is read.
How long has this guy been running a dyno? The hp is calculated by accelerating the fixed mass of the dyno using delta roll speed over time, the ignition signal is only required to calc torque. If his dyno reads different hp numbers with and without ignition signals he needs a new dyno.
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