Quote:
Originally Posted by DriveHard
Nice info.. what gear were you in?? 3rd ???
13-14% drivetrain loss is pretty low... thats a great thing to know.
by chance do you know if the drive train loss is more or less with an automatic ???
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Pulls were made in 4th gear, and we did some more in 5th (they are on separate sheet) and it was the very same results. 199/182 ish. Didn't change the results. Car was dynoed after 1hour of trip, with only 10 minutes of cooling down. Didn't change numbers even after 7th pull.
Interesting note from dyno operator - granted he was not experienced on BMW much- is that he didn't understand why it is so lean in the 1st 4-5k RPM, then riches up. He said it is quite lean compared to other cars he samples. I don't know why it is lean, may be it is the nature of the beast.