Thread Tools Search this Thread
Old 30 January 2007, 10:53   #11
Country: USA
Town: Oakland CA
Length: 3m +
Join Date: Feb 2005
Posts: 6,620
Originally Posted by Peter J View Post
Does anyone know what re-mapping is?
The engine electronics read all sorts of variables: throttle position, engine rpm, O2 content of the exhaust, etc, and the computer decides how to change the amount of fuel injected and alter ignition timing to suit the current conditions. For example, if everything else remains the same, but the throttle is advanced, the computer will most likely increase the amount of fuel injected, and advance the ignition timing a bit to get the increase the rpm desired.

The mapping is exactly how the computer responds to differing inputs. You can change (or re-map) the responses for whatever you want to enhance, be it low end power, fuel consumption, whatever. Usually, the mapping is tuned for overall driveability and smoothness across the rpm range.

This is a very general explanation, not all of it is necessarily applicable to E-Tecs.


jyasaki is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 03:28.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.