Supercharged/Turbocharged The increase in air/fuel pressure above atmospheric pressure in the intake system caused by the action of a supercharger or turbocharger attached to an engine.

3 Bar MAP volt ---> boost conversion, anyone?

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Old Jul 12, 2007 | 11:16 PM
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3 Bar MAP volt ---> boost conversion, anyone?

Well i just got me a 3bar GM map sensor. Its hooked up already, did a few runs and logged it. So far all i know is that 2.5volt is about 10psi, but I would like to know if anyone knows the exact conversion from volt to boost for 3bar map sensor? I also noticed at idle with 0% throttle, the map volt is 0.77v-0.79v
Old Jul 12, 2007 | 11:24 PM
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Google son, first link.

Old Jul 12, 2007 | 11:30 PM
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hmm. dosnt seem right to me though. at 10psi mine reads 2.54v and in 20vacum its about .77v
Old Jul 13, 2007 | 05:45 AM
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Originally Posted by streetzlegend
hmm. dosnt seem right to me though. at 10psi mine reads 2.54v and in 20vacum its about .77v
Mad tyte JDM Voltage???? lol. I'd assume the EB has some sort of setting to know what MAP sensor it has, you sure thats correct? Assuming that the graph Neal posted is correct, your "line" is alot steeper than the 3Bar line on the graph there.
Old Jul 13, 2007 | 05:47 AM
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Originally Posted by 95BLKMAX
Mad tyte JDM Voltage???? lol. I'd assume the EB has some sort of setting to know what MAP sensor it has, you sure thats correct? Assuming that the graph Neal posted is correct, your "line" is alot steeper than the 3Bar line on the graph there.
Yes im sure its correct. I dont know if the EB has some parameter changes i can do for it.
Old Jul 15, 2007 | 08:04 AM
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Ok, so I got question solved. Now I have a new question. Is there any way possible I can log boost and wideband with emanage blue. It only has one port for either boost or wideband. So any rig i can do to be able to put both?
Old Jul 15, 2007 | 10:45 AM
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Hey can you use the reltive pressure chart. My eu has that and it will convert it for you into psi
Old Jul 16, 2007 | 07:26 AM
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Originally Posted by streetzlegend
Ok, so I got question solved. Now I have a new question. Is there any way possible I can log boost and wideband with emanage blue. It only has one port for either boost or wideband. So any rig i can do to be able to put both?
what was the answer?
Old Jul 16, 2007 | 08:32 AM
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Originally Posted by maxine'sMan
what was the answer?
Well, the person that sold me the map sensor sent me an excel document that converts pressure into kpa, and then into voltage, etc...
Old Jul 16, 2007 | 08:50 AM
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Why don't you post it if it's different than the one above so we can see the difference?
Old Jul 16, 2007 | 08:59 AM
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Here you go. i just made this to compare the two.
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