NefMoto > Technical > Data Logging > MAF and other sensors
Pages: [1]
« previous next »
Author Topic: MAF and other sensors  (Read 6647 times)
masterj
Hero Member
*****

Karma: +62/-5
Offline Offline

Posts: 1049



WWW
« on: February 18, 2012, 07:07:42 AM »
Hey all!  Smiley
What other sensors ME7.5 uses to control AFR when MAF is disconnected? In my car there's also MAP sensor. Is it used when MAF fails? Or only o2 sensor controls AFR when MAF is disconnected?

Thank you for your answers
Logged
ME7Tuner Wizard
matchew
Hero Member
*****

Karma: +47/-22
Offline Offline

Posts: 503
« Reply #1 on: February 18, 2012, 07:14:08 AM »
When the MAF is deemed to have failed the ECU falls back to air flow calculated from throttle angle.
Logged
julex
Hero Member
*****

Karma: +79/-4
Offline Offline

Posts: 923
« Reply #2 on: February 19, 2012, 09:16:31 AM »
unless the car has wideband o2 from factory in which case it uses these.
Logged
matchew
Hero Member
*****

Karma: +47/-22
Offline Offline

Posts: 503
« Reply #3 on: February 19, 2012, 09:36:49 AM »
No

The ECU uses calculated air flow from throttle plate angle, and the wide band 02 correct any discrepancy between actual lambda and requested lambda.
Logged
masterj
Hero Member
*****

Karma: +62/-5
Offline Offline

Posts: 1049



WWW
« Reply #4 on: February 19, 2012, 10:06:51 AM »
Quote from: matchew on February 19, 2012, 09:36:49 AM
No

The ECU uses calculated air flow from throttle plate angle, and the wide band 02 correct any discrepancy between actual lambda and requested lambda.

Thank you. Now is it normal that air flow calculated from throttle angle is corrected ~20% by wideband o2 sensor?
Logged
ME7Tuner Wizard
matchew
Hero Member
*****

Karma: +47/-22
Offline Offline

Posts: 503
« Reply #5 on: February 19, 2012, 10:23:47 AM »
Depends on your set up and calibration. If you have changed things away from stock and not calibrated the correct tables, then don't expect to see/feel a stock response.
Logged
Pages: [1]
  Print  
« previous next »
 
Jump to:  

Navigation
Personal Tools
  • November 23, 2024, 12:25:53 AM
  • Welcome, Guest. Please login or register.
    Did you miss your activation email?

    Login with username, password and session length
Search
 
Advanced Search
About Disclaimer
All Rights Reserved 2010 Nefarious Motosports
Powered by SMF 1.1.21 | SMF © 2015, Simple Machines Page created in 0.024 seconds with 17 queries. (Pretty URLs adds 0s, 0q)