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Power FC GM 3 Bar Map Sensor and Large Port? Settings going to change?

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Old 09-22-05, 11:57 AM
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GM 3 Bar Map Sensor and Large Port? Settings going to change?

I can't get my car to idle properly, I've found tons of different settings on the forum for the 3 bar map sensor and I am not sure which to use. I am using a power FC and so far I've come up with the following:

43860 offset 0
41800 offset 0
43500 offset 320
44000 offset 357

I remember there being one that was like 72800 or something. Anyway, my engine has a large port. Any help would be great, thanks.
Old 09-22-05, 03:37 PM
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Old 09-22-05, 09:19 PM
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Might not be the map sensor settings but: O2 control, idle control, ISC,, timing, fuel, etc.
Old 09-22-05, 10:01 PM
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it was PIM voltage for the 1000rpm range, i changed it to 75% and it works. Forgot to do that... car was dumping too much fuel @ idle.
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