Get this totally free software program for tuning the car chips and extract the beast from your car motor! Microchip tuning represents adjusting or updating an erasable programmable read only ram micro-chip in an automobile’s or different vehicle’s electric control unit (ECU) to reach outstanding efficiency, regardless of whether it be more force, better emission, or perhaps much better. Opens a window with an overview of the dialogue between the software and the ECU. Connecting to the ECU If the connection does not happen automatically: ECU-Connect. History (Sagem) ECU-History Displays a window of the logs for the latest map reloaded into the ECU. See mapping Read Map Only possible with cable connection. Viezu offers the very best in- car tuning software and support, including ECU tuning files. Our ECU tune software is all written in house by our highly skilled. EcuEdit, mazdaEdit, gtr35Edit, subaruEdit, BRZEdit, logViewer - ECU tuning and logging solution by epifanSoftware. ECU Read/Flash for Subaru, Mitsubishi, Mazda. Ecu Map Edit Software ElshayalSmart v.3.7.6 Download Maps from Google Earth, and Trace & save GPS route and View and Rectify Raster Images gif, jpg, bmp and Edit.

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To read your car's stock file from the ECU you can use Tony's free NefMoto ECU Flashing Software. It is the easiest and best supported method. You will need a cheap flashing cable.

If you already have an aftermarket tune from a commercial tuner, it is likley that they will have disabled the ability to read using this method.

In this case or if something goes wrong and you can no longer connect using NefMoto, you will need to have a Galletto 1260 Flashing Cable to hopefully rescue the ECU in boot mode (a lower level protocol).

To change your ECU tune will require map editing software. Tunerpro is a free map editor. WinOLS is a more expensive map editor. Most non-professionals use TunerPro.

TunerPro will need a definition file (.XDF) for the ECU file you want to edit. This tells TunerPro where the various maps and relevant data are in the file. There are several XDFs posted in the Nefmoto Definition File subforum. Many are works in progress; if you find an error please let the author know.

You will need knowledge of which maps perform what tasks and what data should be changed. Read the S4Wiki.org tuning guide and the Nefmoto tuning subforum.

Your ECU file has several internal checksums that need to be updated when the file is altered. If these checksums are incorrect the car will not start. Or worse, it may start once or twice and catch the invalid checksum and leave you stranded. A lot of guys carry around a spare known working ECU as insurance.

More info about checksums: Andy Whittaker's site.

MTX-electronics sells an affordable TunerPro plugin that will correct checksums for ME7.

Writing/flashing your tuned file back to the ECU is the same as the reading process above. Again, use the NefMoto ECU Flashing Software.

Keep close track of how your car is performing after each tune revision.

Vag-Com to check LTFTs (long term fuel trims) and other things.
APR's ECUx. Not really supported anymore.
Setzi's ME7Logger - The fastest and most flexible to date.
NefMoto (as of 1.9.0.0) has logging support.

The open source VW/Audi ECU community is evolving nicely. Please help give back by providing your feedback and helping others.

Tuning

The S4Wiki.org tuning guide is an incredible ME7 resource put together mostly by nyet. Check out the other articles on the site.

ME7 Documentation

Funktionsrahmen - Bosch ME7 documentation

Books

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Intro Guide to Do-It-Yourself ECU Map Chip Tuning / Programming / Flashing (Using HEX Editor)

PART 1 of this article will talk about basics of ECU. You'll first need to get familiar with this information before attempting to code (as discussed in PART 2).

PART 2 demonstrates example how to program ECU via HEX coding software.

First a basic beginners guide introduction into world of car tuning and what you need to know:

The ECU of your car is like its brain. For your car to deliver it’s best performance you have to keep it in a fit condition at all times.

This is the only way to ensure that you get the best in both driving as well as handling. Modern day cars do not have manual controls. Nowadays sophisticated technology is being incorporated in the form of computerized controls that guide and ensure Engine performance.

Whenever you make a physical intervention the data pertaining to such intervention gets recorded in the memory banks of your car’s computer.

The computer uses the mapped data to work out the optimum control conditions in which the engine should function.

The ECU shuffles through the tons of data that come to it in the form of readings to decide the course of action that should be taken by the engine to ensure an ideal drive. The ECU tells your engine not only what to do but also how to do it. Thus the ECU in order to make accurate diagnosis on engine control utilizes stored data.

Even though you have made modifications in your car, the ECU still continues to get an input of the old data which is stored in it’s memory. This old data no longer is credible as it pertains to conditions that existed before the modification.

The input data to the ECU should pertain to the post modification situation of the components and parts introduced, while making the modification. This means that you have to erase the old data from memory and new data pertaining to post modification should be logged into the ECU memory by mapping in new readings. This is the reason why ECU resetting is essential for optimum performance after any modification has been carried out in your car.

The moment you have carried out the modification you should purge out existing data in your ECU’s memory. You should then feed in fresh data pertaining to the conditions that have come into existence post modification. The ECU has to operate on the newly acquired data as this new data reflects the true conditions post modification.

You should be well versed with the vital art of resetting the ECU of your car. You have to let your ECU adapt itself to the new situation arising out of the modification. Allow your ECU to relearn and perform.

Now therefore the step to be performed is to purge the old data and reset your ECU. Doing this allows it to adapt itself to new parts and efficiently perform post modification also. To reset the ECU you simply have to unplug the negative battery cable connection. Theoretically it is best to leave it in this disconnected condition for as long as you can. Practically leaving it disconnected overnight is more than enough.

After having left the cable disconnected for sufficient time you have to connect back the cable. Start the car and keep it running so that it warms up. This would not take more than 10 minutes at the most in summers. Once you have done this you have accomplished the ECU resetting. Shut off the engine.

You can now use your car whenever you feel like. ECU resetting is over.

You should remember a few points when doing the ECU setting. One important point that you should remember is not to reset ECU when using fuel additives or different octane fuel than you normally use. The idea is not to reset the ECU when using anything in your car that you normally don’t use. You should prepare the ECU to get adapted only to the conditions that it would normally encounter. This would also reduce the number of resets you will have to do to the ECU.

However if you are going to change the operating conditions on medium or long-term basis then you should reset your ECU. One such instance could be when you think of boosting octane.

Resetting the ECU when you choose to boost Octane becomes necessary because your ECU has a memory bank for octane.

This means that if you've been using lower octane, the response of ECU will correspond to lower octane with the booster matching lower octane performance.

The ECU response will continue to correspond to lower octane even though you have started using higher-octane fuel. This is because the ECU has not been reset for higher octane. Thus even though higher octane is in actual use,

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