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      11-14-2012, 04:18 AM   #34
hotrod182
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Drives: 07 335i, 06 M3
Join Date: Dec 2006
Location: California

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Quote:
Originally Posted by TDIwyse View Post
Don't know. I subscribe to the idea that dyno's are only useful for comparing relative changes. So using the simple GTech HP/TQ approach is useful for quantifying relative impact of mod's.

Interesting comparison of dyno variation with the same car, same day:

http://www.turbomagazine.com/tech/03...ine_dyno_dash/
I agree. There is no more effective tool for gauging your car's performance than a GPS performance meter. I have a Vbox Performance Box, and A Gtech Fanatic. On the Vbox, I can run 3 consecutive runs and have a 1/4 mile trap within a few tenths of a mph. The slightest change in HP will show up. Funny how some of these guys with huge HP dyno results often underperform at the dragstrip.
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2011 Alpine 335d M-Sport 12.34 @ 110.48mph
2012 LEAF 130MPGe
2008 Black 335i Sedan. 11.11@ 129.47 mph,(8.39 sec 60-130 stock turboWR)
2008 Monaco Blue JB3 2.0 335i Coupe. 11.33 @ 132.77 mph (N54 trap speed WR)
60-130mph: 6.95 seconds stock turbo WR (.16% slope)