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Detecting MBT with Virtual Dyno

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Old Jul 6, 2018, 02:13 AM
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Detecting MBT with Virtual Dyno

I'm about to tune an Evo 8 using E85, short of an actual dyno, I can't think of any other method to detect MBT other than Virtual Dyno. I've read a couple of old posts regarding using VD to look for MBT, different people offer different approaches. Some say that speed should be included in the logged parameters, others say to log two parameters only, TBS & RPM-2byte), since that would offer a better logging resolution. The other issue is VD smoothing, someone suggested to use the max smoothing setting at 20 for the best resolution in detecting increases/decreases in power.

I'd appreciate your feedback
Old Jul 7, 2018, 12:32 AM
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An Evo 8 running E85, using VD.... in the UAE

Last edited by Evo9_Dubai; Jul 8, 2018 at 11:54 PM.
Old Jul 7, 2018, 07:09 AM
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Originally Posted by Evo9_Dubai
An Evo 8 running E85, using VD....
And your point is .....?
Old Jul 8, 2018, 09:19 PM
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You will absolutely not find MBT on E85 without a proper dyno. VD is way too inconsistent for something like that.
Old Jul 8, 2018, 11:53 PM
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Originally Posted by foxbat
And your point is .....?
oops.. corrected my initial reply.. Not too many evos running e85 in the uae.
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