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-   -   RPM drop between upshifts (https://www.miataturbo.net/megasquirt-18/rpm-drop-between-upshifts-71430/)

chiefmg 03-08-2013 04:16 PM

RPM drop between upshifts
 
I have a Reverant enhanced MSII running a BRP intercooled MP62 supercharger. Recently I installed a FM Happy Meal with their 13.45 pound flywheel. When the car is warm the revs don't drop when the clutch is pushed in to upshift (foot completely off the accelerator). Before I make any changes, can anyone tell me if this is controlled by the settings in the Over Run Fuel Cut menu? I'm still getting up to speed with the nomenclature in TunerStudio. Thanks.

Braineack 03-08-2013 04:33 PM

post a log of it happening. could be some of the idle settings.

Ben 03-08-2013 04:39 PM

That's our newest feature: automatic rev match.

J/K. Sound like improper idle valve tuning. Post your tune file and a short datalog showing the problem please.

richyvrlimited 03-08-2013 05:21 PM

You need to adjust the Leave Valve Closed Above and The close delay values in your idle valve setup.

Rev has them set to stay open which causes the behaviour you describe above.

thebeerbaron 03-08-2013 08:08 PM

Did this start immediately after the clutch change? You sure this isn't a physical problem with the clutch not disengaging properly?

chiefmg 03-08-2013 09:16 PM

Thanks for the input, I'll take a log and post it tomorrow.

It did start happening after the clutch change but I suspect it is more to do with my settings being done for stock components. Clutch is disengaging, when I'm stopped with it in gear the car doesn't move. However I'm not ruling anything out at present.

chiefmg 03-14-2013 05:47 PM

2 Attachment(s)
I have to apologize for not getting back to this as I said I would. I took a log but it was about 30 minutes worth and I knew that would be a pain to ask anyone to look through. Weather and family conspired against me until today, so here's my 10-15 minute log attached.


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