FORScan, boost ~= MAP?
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Trailering
Joined: Oct 2021
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FORScan, boost ~= MAP?
The closest thing I could find to reading the turbo boost psi, is the MAP psi sensor reading. Is that at least in the ballpark of what I could expect the boost to read if I wired up a proper lead and gauge?
On my bone stock '96 I noticed the MAP reading ranges from 11-14 psi generally, which seems on par with the output of the stock turbos. I am in Colorado at about 7k feet.
On my bone stock '96 I noticed the MAP reading ranges from 11-14 psi generally, which seems on par with the output of the stock turbos. I am in Colorado at about 7k feet.
Got Data?
Joined: Dec 2012
Posts: 4,272
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From: Lake Stevens, WA
Manifold Absolute Pressure (MAP) includes barometric pressure in addition to boost pressure. To read just turbo boost, use the MGP PID in FORScan. MGP = Manifold Gauge Pressure.
More info in the FORScan how-to thread on PIDs that work for our trucks below:
https://www.ford-trucks.com/forums/1...de-thread.html
More info in the FORScan how-to thread on PIDs that work for our trucks below:
https://www.ford-trucks.com/forums/1...de-thread.html
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Trailering
Joined: Oct 2021
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Interesting, I must have missed that one, will look for it the next time I get things hooked up, thanks.
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Trailering
Joined: Oct 2021
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After I added it, I saw about 2psi while running steady at 60MPH at just under 2k RPM:
And then 12psi at near WOT starting at around 40MPH:
So the MAP is definitely atmospheric PLUS boost, MGP is only boost. I was starting to think there was no way to easily read boost on these older trucks, so that's great that it's available.
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