Quote:
Originally Posted by semtex
Hmm...what ramifications might his have on dyno tuning? Like will the difference in airflow with the car on a dyno vs. real-world driving be enough to invalidate or compromise the ECU map loaded in from a dyno tune?
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I would imagine that you'd have small differences, yes, given the fact that on a dyno, the engine is fighting the resistance of the rollers. It would depend on the dyno manufacturer and workings, but they'd have to try and simulate the increase in aerodynamic and rolling drag, as well as air compression effects after about 100 mph.