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M44 Wiki
Welcome to the Motronic 4.4 Wiki. The goal of this project is to consolidate the information and resources put together by various members of the Volvo community into a singular resource, focusing on tuning -
ECU Flashing
This project is based off of the software TunerPro created by Mark Mansur. The software is free, but if you enjoy it, please donate to him! The.bin file is the contents of the flash -
Modified Vehicles
For a method to calibrate injectors: http://m44.wikia.com/wiki/Tuning_the_Injector_constant_and_dead_times Calibrating for injectors requires setting the'Injection Basic Adjustment Factor' and the'Injector Opening Time by Voltage'. -
Binaries and TunerPro Files
Tuning in it's most basic form is the manipulation of a vehicle to make it run in a certain way; generally better! With ECU tuning, the user manipulates data within the computer to change -
Getting Started
Before you start tuning you should at least acquire and install a boost gauge. A wide-band Air Fuel Ratio gauge would also be extremely beneficial to safely adjust fueling and boost levels - though this -
Ostrich Install
What is an Ostrich 2.0? Without getting too technical, it is a flashable EEPROM chip that acts as a "buffer" between your laptop and the ECU and makes tuning modifications possible without having to -
Data logging
The.adx file is the data logging file that must be setup in TunerPro RT for logging functionality to work. For bench testing the rev5_test.adx is needed, and for logging in the car -
Tuning load on big turbos
After having found the cause of my horrible boost-spikes, I'd like to share my findings and propose a better method for mapping engines with a new BIG turbo (or upgraded TCV Valve). The -
Tuning the Injector constant and dead times
As everybody knows, there are two variables we can use for injector calibration, namely the injector constant, and the dead time.The last is also dependant on voltage, so we use a table for that -
FAQ
Intro As I saw a few questions returning multiple times in the thread I thought I'd conjure up a little FAQ page.But first a few pointers for finding the info you need: -
Tuning
From page 16, post#308, tuners rejoice thread: You cannot really correlate load(7.97ms) to PSI. You will just need to start raising the values a little at a time and seeing how that -
M4.4 A/C Converison
With this app: www.meditekst.nl/downloads/ACmod.zip you can modify a 607 (automatic gearbox) or 608 (manual gearbox) bin to work with the A/C system of a M4.3 car. WARNING: Don -
MAF Archived Footage
The stock MAF can only measure flow up to 826Kg/h, this limit can be reached on a stock 850 with a 15g fairly easily. In order to maintain accurate fueling calculations past this rather -
Parameters: Fueling
Work In Progress (All Parameters are described as they appear in the REV6.XDF Linked at the bottom of this page) -
Introduction to M4.4
Overview: So next i'm going to start talking a little bit about the fuel injection system we are going to be tuning. We will be working with Motronic 4.4, Volvo’s and Bosch
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