just started logging MAP output voltage ,that being said does anyone know for a fact if 4.0 volts is the max the ECU can see before it starts fuel cut or any other fail safe actions ?
Or is it close to 4.0 AND other inputs ?, load,rpm,timing,IAT etc
Or is it close to 4.0 AND other inputs ?, load,rpm,timing,IAT etc
kponti
MBWorld Fanatic!
close
Feb 19, 2026
- Join DateDec 2013
- Posts:2,394
-
iTrader Positive Feedback0
-
iTrader Feedback Score(0)
- Vehicle(s) I driveE63
-
Likes:160
-
Liked:239 Times in 193 Posts
Not sure about MB but most cars I've seen in the past are around 4.2-4.4 volt range
Super Member
Quote:
Or is it close to 4.0 AND other inputs ?, load,rpm,timing,IAT etc
I was told 4.5v triggers ECU interruption on the map sensor. So I went to 4.5v setting on map clamp and dialed back a notch. No issues. If it was 4.0 v......I wouldn't be running. Then again, you're a different platform. It's clear to see that the model and year are programmed differently. Good luck.Originally Posted by cnterline
just started logging MAP output voltage ,that being said does anyone know for a fact if 4.0 volts is the max the ECU can see before it starts fuel cut or any other fail safe actions ? Or is it close to 4.0 AND other inputs ?, load,rpm,timing,IAT etc
Junior Member
Sorry, wrong section..
