Adding Value MAP Inches of Mercury

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EagleMark
Posts: 424
Joined: Mon Mar 22, 2010 11:11 am

Adding Value MAP Inches of Mercury

Post by EagleMark »

Trying to add a value in a definition for MAP Inches of Mercury (just as a reference since that is how I was taught) once done I will add it next to MAP KPA. But I need the information like packet offset, range and conversion information?
1990 Chevy Suburban
1994 Buick RoadMaSSter Estate Wagon LT1.
1972 IH 1210 Isky Cammed Balenced 345 TBI

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dfddfd2
Posts: 112
Joined: Wed Feb 27, 2008 4:37 pm
Location: Burgaw, NC

Post by dfddfd2 »

Just duplicate everything in the definition for MAP KPA and multiply the conversion and ranges by 0.2953.

For example, I have MAP kPa defined as:
title="MAP kPa"
id="MAPKPA"
units="MAP kPa"
packetoffset=0x3D
sizeinbits=16
range low="0.000000"
rangehigh="297.000000"
conversion="((x/200)*61.7284)+1.105"

I also have the same value defined in PSIg:
title="Boost (psig)"
id="BOOSTPSIG"
units="Boost(psig)"
packetoffset=0x3D
sizeinbits=16
range low="-14.500000"
rangehigh="28.400000"
conversion="((((x/200)*61.7284)+1.105)*0.145)-14.7"

Cheers,
Dave
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EagleMark
Posts: 424
Joined: Mon Mar 22, 2010 11:11 am

Post by EagleMark »

Thank you, I will give that a try. it would speed up my process of diagnosing as I am so used to vacuum being in inches of mercury. I guess that went south when everything went metric?
1990 Chevy Suburban
1994 Buick RoadMaSSter Estate Wagon LT1.
1972 IH 1210 Isky Cammed Balenced 345 TBI

GearHead-EFI.com EFI Conversions and Chip Tuners!
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dfddfd2
Posts: 112
Joined: Wed Feb 27, 2008 4:37 pm
Location: Burgaw, NC

Post by dfddfd2 »

That's one of the great things about TunerProRT. You can define any unit conversion factor you want. Another really powerful aspect is the ability to combine multiple logged values into calculated values.

For example, I have injector pulse width and RPM combined to calculate duty cycle:

title="Injector Duty %"
units="Duty %"
conversion="x*0.01*y/1200"
"x"="native" (injector pulse width in 10usec units*0.01=msecs)
"y"=link to RPM

Cheers,
Dave
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EagleMark
Posts: 424
Joined: Mon Mar 22, 2010 11:11 am

Post by EagleMark »

Sweet!

My mind is churning but I am going to have to catch up my knowledge for things like "conversion="x*0.01*y/1200" " :shock:
1990 Chevy Suburban
1994 Buick RoadMaSSter Estate Wagon LT1.
1972 IH 1210 Isky Cammed Balenced 345 TBI

GearHead-EFI.com EFI Conversions and Chip Tuners!
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