Who's got a mapdaddy?
11-02-2007, 10:41 PM
#21
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Roger Ennis found this in the hi-res code
Which confirms that there is no look up table for the MapDaddy sensor, and gives us the formula that the MS uses to translate ADC to MAP.
I'm going to keep my offset value at 4 because it agrees perfectly with my boost/vac gauge, but for the record, MS uses 2.147 for the scale.
Guess my autometer phantom gauge is off by 1.9kPa. I'll live with it.
Code:
#elif MPXH6400A
; barometer = { table(baroADC, "kpafactor4250.inc") }
barometer = { (baroADC + 2.147) * 1.6197783 }
map = { (mapADC + 2.147) * 1.6197783 }
I'm going to keep my offset value at 4 because it agrees perfectly with my boost/vac gauge, but for the record, MS uses 2.147 for the scale.
Guess my autometer phantom gauge is off by 1.9kPa. I'll live with it.
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