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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Toronto Dyno Day



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      02-19-2009, 12:37 PM   #111
runningman
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Quote:
Originally Posted by bren335i View Post
it seems your car is allergic to dynos, how do you know smooth the car is? butt dyno's are not calibrated.

There is a 40 ft lb of torque drop on many of those cars, that's VERY significant in a driving scenario.
If tuning is setup for airflow over the intercooler why should it be consistent with no airflow? Wouldn't you expect it to be all over the place? Then the same car does to another dyno with better fans and the curve is much smoother. Doesn't that also make perfect sense? What am I missing??
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      02-19-2009, 12:45 PM   #112
Mike@N54Tuning.com
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Quote:
Originally Posted by untouchableE82 View Post
but when you talk about smoothness i still dont believe that this graph is smooth, even though luca335 states that mine n his graph was the smoothest because of the IC the boost is still never constant. you can tell by the ups and downs in the line on the graph. ive been looking over the graphs for the whole day. and thats why i dyno'ed it again.
but when i compare this to AA graph
AA is much more smoother because boost is constant, and doesnt just kick in at a certain rpm if you get what i mean.
The 1.3 we're testing/developing now provides a much more stable boost curve, give me a few weeks and we'll have you test it out!

Mike
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      02-19-2009, 01:01 PM   #113
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I hope I'm included in this beta testing mike.
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      02-19-2009, 01:10 PM   #114
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me 2 for that matter
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