Immo Status reading Setting Immo Off Modifying some ME7.x characteristics.

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It is also a special skill to understand the combustion engine by itself.

When a compression or spark ignition engine is packaged into an automobile during development, it takes a small team of several trained personal to calibrate if fit for purpose.

Over the years I have been involved in refining the 3 disciplines and in this thread I will share such expertise, using my 2002 Volkswagen Bora V5 Highline.

Despite its lackluster performance from the claimed 170 bhp, I believed, the technology implemented on the engine, would allow it to have much more fury than a modified ABF engine, if tuned via the ECU.

Enough to make a difference to acceleration in our near 1275 kg VW Bora.

Unlike many an enthusiast, I possess skills to access most Bosch ME7 ECUs, with legit tools in my possession and training to understand the ECUs logic.

With the V5 20v, information gained from logging the vehicle on the road in various conditions and of course, working on 24v VR6 engines, was used to produce a more refined engine calibration that could meet the objectives of increasing vehicle acceleration.

Knock related concerns would only become worse on 95 UK RON fuel.

All of the above stemmed from the factory engine calibration.

Using an official MPPS lead with the latest update, the ECUs complete 1 meg bin file was read.

However there was little information available for an address file for the AQN engine.

As a licensed EVC user, a fully defined AZX ols project ( Passat V5) was purchased from an EVC client reseller.

At the time, ols from 24v 3.2 and 2.8 engines were also used, to create an address file to correctly ID 1000 calibration areas of the AQNs bin file.

Over 20 iterations of the AQNsME7.1 engine map were created, until the most of the issue list above was cured and ultimately the car felt good to drive.

I decided to evaluate any calibration improvements via the cars real acceleration as a measure of success on the new calibration, the same day, back to back, just like a dyno test.

Because there were zero hardware changes to the engine or car, the acceleration of the new calibration was evaluated against the standard VW calibration.

This tool was also used to show what the torque profile looked like between the calibrations.

First acceleration evaluation on the the stock engine calibration.

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Bosch Me7 Tuning Software