no fuel cut over 4000rpm
01-14-2012, 03:33 PM
#1
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no fuel cut over 4000rpm
im running a ms1 with hr10g if it matters. and ive altered the software so that my map will read values all the way down to 10 kpa. my problem is just over 4000 rpm when i let off the gas the fuel cut will not kick in. if i let off the gas just under 4000 rpm it works fine. my map readings are smooth the whole time. some insight on what the problem may be is much appreciated.
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01-16-2012, 05:54 PM
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on the bottom row I would put 11kpa and 0s that way once it goes under to 10kpa it won't try to interploate with the row above it.
Something else is odd you can see where GVE goes up to 80-90s on decel cut.
Is this a ms1 pcb 2.2 or 3, if so and you aren't using a TPS, ground the TPS input.
Looks like acceleration enrichements are cutting in for some reason.
Also spark timing goes from 36 to 29 degrees and you get 10ms of fuel added.
I think it maybe rpm based accell thats messing around. I'd disable it and run around to see.
Something else is odd you can see where GVE goes up to 80-90s on decel cut.
Is this a ms1 pcb 2.2 or 3, if so and you aren't using a TPS, ground the TPS input.
Looks like acceleration enrichements are cutting in for some reason.
Also spark timing goes from 36 to 29 degrees and you get 10ms of fuel added.
I think it maybe rpm based accell thats messing around. I'd disable it and run around to see.
Last edited by Techsalvager; 01-16-2012 at 06:06 PM.
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01-17-2012, 04:11 PM
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i disabled all the fuel enrichments, and fuel cut still isnt kicking in till rpm's get somewere between 3000-4000. though i did notice if i very easily add a tiny bit of throttle as it's slowing i can get the fuel cut to kick in. im thinking its either bad map sensor, or a calibration issue?
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01-18-2012, 01:10 AM
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CurrentTune.msq
well i am a bit of a
at this stuff, so i dont blame you for the doubt. let me know if i missed something.
well i am a bit of a
at this stuff, so i dont blame you for the doubt. let me know if i missed something.
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01-20-2012, 02:21 PM
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2012-01-20_10.26.48.msl
i see what you was talking about earlier. it seem Gve is spiking every time the car goes rich in decel. well tps is grounded. i get 0 current every time i try to calibrate it so think that should be good.
i see what you was talking about earlier. it seem Gve is spiking every time the car goes rich in decel. well tps is grounded. i get 0 current every time i try to calibrate it so think that should be good.
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01-20-2012, 07:53 PM
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havent been able to get a pic yet. but i have the wire ran from the tps input on MS to bolt on the floor. its held tight by a nut. the tps was spiking from 0 up to 300%. i calibrated setting 0% to 0 current, and WOT to 255 the highest allowed. now i ony see spikes up to 3% and im still not getting fuel cut over 4000 rpm.
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