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MAP sensor signal voltages?

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Old Apr 20, 2013 | 06:45 PM
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schooldozer's Avatar
schooldozer
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Question MAP sensor signal voltages?

Hi all! Just became a member recently! Excellent site! I have a 99 F350 7.3L. I am building my own 3stage water/methanol controller. My question is...What is the voltage sent out at 0psi,...3psi, 4psi.5psi...up to the 20psi? I don't want to drive and try and look at the boost gauge and dmm. Bad things could happen. If anyone knows this info or where to find it I would greatly appreciate it! Thanks!
 
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Old Apr 20, 2013 | 10:00 PM
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Ziggy.'s Avatar
Ziggy.
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From: Blaine, TN
Welcome to the forums!

The map sensor sends an analog signal to the pcm, so its not measured in volts it is hertz.

Here is the only thing i have for the sensor.

0psi=111hz with koeo, may vary depending on baro.
5.3psi=130hz
15.3psi=167hz
25.3=203hz

The simplest way to make a controller is with a hobbs switch set at whatever psi you would like the system to come on.

Hope that helps you man.
 
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