Quote:
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Originally Posted by Boss330
Quote:
Originally Posted by A418t81
The dyno doesn't lie.
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Seriously?
How do we then explain the 15% variation from the same brand/type of dyno from shop to shop. Or why the S65 usually seems to underperform on the dyno and pull timing etc?
On the chassis dyno we have seen anywhere from 365whp to 430whp, from the same S55 engine. Surely that isn't exactly evidence of reliable and verifiable data acquisition?
Trap speed is a better measure of real world performance data, since the variables of dyno operation, calibration and conditions in the dyno room are out of the equation.
BTW, C&D recorded a 116MPH trap speed for the M4 today:
http://www.caranddriver.com/reviews/...ed-test-review |
But that M4 is a FULLY loaded with manuat tranny, that can explain the lower trap speed compared to what we have seen before, just saying.