MS1 Extra does rev under light throttle

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azaad
Helpful MS/Extra'er
Posts: 75
Joined: Fri Dec 03, 2010 5:10 am

MS1 Extra does rev under light throttle

Post by azaad »

xMS1 Extra will not rev pass 2500 RPM under light throttle approx. 20% throttle. it sound like when there is a spark limit....and my tachometer bounces around this RPM, I have tried reflashing the MS devices but that was unsuccessful, Attached is a tune file logger.

Tune file and logger in attachment.


Rgds.
Azaad
azaad
Helpful MS/Extra'er
Posts: 75
Joined: Fri Dec 03, 2010 5:10 am

MS1 Extra does NOT rev under light throttle

Post by azaad »

xMS1 Extra will not rev pass 2500 RPM under light throttle approx. 20% throttle. it sound like when there is a spark limit....and my tachometer bounces around this RPM, I have tried reflashing the MS devices but that was unsuccessful, Attached is a tune file logger.

Tune file and logger in attachment.


Rgds.
Azaad
azaad
Helpful MS/Extra'er
Posts: 75
Joined: Fri Dec 03, 2010 5:10 am

Re: MS1 Extra does rev under light throttle

Post by azaad »

Please delete the first post..

Tks.
john.p.clegg
Running MSx/Extra
Posts: 558
Joined: Sat Jul 21, 2007 6:49 am
Location: Manchester

Re: MS1 Extra does rev under light throttle

Post by john.p.clegg »

Off the top of my head I'd suggest VR gap..

John
Matt Cramer
Super MS/Extra'er
Posts: 17507
Joined: Thu Apr 16, 2009 8:08 pm

Re: MS1 Extra does rev under light throttle

Post by Matt Cramer »

That is a seriously unstable MAP signal - where is the sensor plumbed to?
Matt Cramer -1966 Dodge Dart slant six running on MS3X
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