Dyno Tonight... wanna hang out?

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I'm going to get re-dynoed next wed at *ahem* paul knows where to see if the numbers are different I won't disclose my numbers till then

DynoJet's are probably the most notoriously *non-conservative* dyno out today. In order to get a proper read, you need to dyno a stock S4 on the same dyno for a control variable to measure from.

For Example:

Stock Audi S4
250b/258b or 188w/194w Advertised Ratings (25% awd drivetrain loss)

Control Variable
220w/259w - Top Speed DynoJet Dyno
191w/221w - Dyno Dynamics Dyno

Top Speed DynoJet Dyno
194(advertised wheel torque) / 259 (dynojet wheel torque) = .75 correction factor
400w(dynojet)*.75(correction factor) = 300w(real wheel numbers)

Dyno Dynamics Dyno
194(advertised wheel torque) / 221(dyno dynamics wheel torque) = .88 correction factor
400w(dyno dynamics)*.88(correction factor) = 352w(real wheel numbers)

Like I said, you need a stock S4 to dyno so you can get the correction factor to figure real wheel hp/tq and stick with that specific dyno to measure from.

just my 2cents.