Map Voltage Values vs TE MAP headings
Thread Starter
1.0 BAR
Joined: May 2003
Posts: 326
Re:Map Voltage Values vs TE MAP headings
I always thought the MAP was RELATIVE. This makes a lot of sence if its absolute since I also live in the denver area..WESTMINSTER and comunte to GOLDEN for school, ~6000 ft ele. Im gonna do some more experimenting, I have some ideas how to make the ECU read the wideband so I can datalog through the ECU and get the whole story. Ill keep you guys updated
1.5 BAR
Joined: Feb 2004
Posts: 1,039
Re:Map Voltage Values vs TE MAP headings
Originally Posted by street_kings
Another thing that i have learned through logging the map sensor Vs. a gauge is altitude effects. Boost gauges are Relative, whereas the MAP is absolute. This means that when i'm here in denver, it my boost gauge read 7.5 PSI, where my MAP sensor indicated 1331 mBar (19.5657 PSI - 14.7 atmospheric = ~4.9 PSI. Perhaps this is what happened with you 88b16civic?
Anyway, the method I used to make a datalogging table for my Techedge was take 2 readings: one a full VAC and one at ambient. Then, write an equation. (full VAC being idle, ambient being key on, engine off)
Anyway, the method I used to make a datalogging table for my Techedge was take 2 readings: one a full VAC and one at ambient. Then, write an equation. (full VAC being idle, ambient being key on, engine off)
1.5 BAR
Joined: Feb 2004
Posts: 1,039
Re:Map Voltage Values vs TE MAP headings
Originally Posted by street_kings
Sure...you're probably gonna have to scale them since they were recorded at 5600' above sea level 
. I'll post the MAP Voltage/mBar Reading tomorrow so everyone can use it
. I'll post the MAP Voltage/mBar Reading tomorrow so everyone can use it
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