Injector Coding Autel

[Karriem Drewery]

Calibratingthe flow rates for direct injectors is a requirement on some vehicles when installing new injectors. The reason why injector calibration or flow adjustments need to be made electronically via the DME is that each injector is slightly different from the next. The DME needs to know this to "balance everything out", so to speak. In this case, we'll be talking about the N54 injector calibration specifically; showing you the step-by-step instructions on how to do this with an Autel MX808. This is one of the easier aftermarket tools to do this job for any user. I have used BMW factory software before (INPA and ISTA/D) to do this work and I like the fact that I don't need to use a laptop and special cables to perform this type of work. You can go from basic system scanning right into basic system service functions with the same tool which I find extremely convenient. Follow along and we'll show you what to do with the MX808 to perform the calibration process.

We have a complete article and video on how to replace the injectors on an N54 engine. The critical step during the injector install is to record the two three-digit calibration numbers off the injector.

This is an easy step but one worth mentioning. Plug the MX808 into the diagnostic port with the included OBD2 cable. You will hear an audible beep emit from the scanner when it's turned on and plugged into the port. This verifies that the scan tool is communicating with the vehicle and there is power at the OBD2 port. The vehicle should be in accessory mode (key on and engine not running).

First, you will select "automatic selection". Then you will have two options for the VIN entry. You can either manually enter the VIN or let the scanner read it for you. I recommend letting the scanner read for you. If it works, it will enter the VIN. Verify that the VIN matches and then select "OK".

At this point, you will get a page that shows the stored compensation values. Please note that these values do not match up one-hundred percent to what you entered, as the DME will change these numbers slightly. This is completely normal and part of the coding process. You will repeat the process for each cylinder that has a swapped injector. Compared to the BMW-specific software and much more expensive scan tools, the MX808 gets this job done easily and affordably. The menu system is straightforward enough that anyone can complete the re-calibration process.

Gareth is the BMW Make Level Marketer for FCP Euro and has been with the company since 2012. Gareth's BMW obsession started with a hand me down E39 528i when he was 17. From this car he learned how to do his own repair work while also learning more about BMW. When Gareth was at CCSU studying Marketing he had the opportunity to go to SEMA with the college car club. This is where he developed his love of the automotive industry. Since joining FCP in 2012 Gareth has sought out to develop one of the broadest and most accurate BMW replacement parts catalog. he can be reached atga...@fcpeuro.com

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Note:Autel tools do not support injector coding on all vehicles, please contact us by email with your VIN and requirements, we will reply you as soon as possible after confirmation.?Contact us?

Injector coding scan tools can be used to read injector compensation codes, injector live data and programme new injector codes to the ECU for accurate communication and Injection control. After the ECU or injector is replaced, injector code of each cylinder must be confirmed or re-coded so that the cylinder can better identify injectors to accurately control fuel injection.

Our Injector Coding Scan Tools offer great flexibility in vehicle coverage and/or other systems and built-in functionality and features. From single brand OBD scanners to full coverage all system bi-directional workshop scan tools.

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