Injector Coding

synthetic-oil · **Joined:** Tue Sep 24, 2013 8:03 pm **Posts:** 140

Took the injectors to the diesel shop and they are all tired. I know someone here has a scanner that they have used that works. I bought one that was for Jeep and would work on 2005 -2014.What they don't say and there is no way to look it up was this function doesn't work on everything. So I now have been contacting manufactures. The ones that have replied I only found one so far. Money is tight so looking to find one to do coding as inexpensively as I can

geordi · **Posted:** Wed Jan 19, 2022 4:37 pm

This can be solved for zero dollars: You don't need to code the computer for the injectors.

The difference will not be noted by the computer, and the change in performance from having them coded or not is like a marathon runner who can tell what brand of shoe he is wearing while blindfolded... Only that .00001 percentage of the population could recognize a performance difference.

You will see far more performance improvement from going from out-of-spec injectors to ones that are fresh and performing properly

PZKW108 · **Joined:** Sun Apr 06, 2014 5:23 pm **Posts:** 461

geordi wrote:

This can be solved for zero dollars: You don't need to code the computer for the injectors.

The difference will not be noted by the computer, and the change in performance from having them coded or not is like a marathon runner who can tell what brand of shoe he is wearing while blindfolded... Only that .00001 percentage of the population could recognize a performance difference.

You will see far more performance improvement from going from out-of-spec injectors to ones that are fresh and performing properly

You will probably never see the difference in performance.

But it can make the difference between passing a smog test or not......

It takes 5 minutes too change injector codes, you got to be a fool not to do it !!!!!!

WWDiesel · **Posted:** Sat Jan 29, 2022 5:07 pm

PZKW108 wrote:

geordi wrote:

This can be solved for zero dollars: You don't need to code the computer for the injectors.
The difference will not be noted by the computer, and the change in performance from having them coded or not is like a marathon runner who can tell what brand of shoe he is wearing while blindfolded... Only that .00001 percentage of the population could recognize a performance difference.
You will see far more performance improvement from going from out-of-spec injectors to ones that are fresh and performing properly

You will probably never see the difference in performance.
But it can make the difference between passing a smog test or not......
It takes 5 minutes too change injector codes, you got to be a fool not to do it !!!!!!

If you want optimum performance and economy from your engine, it should be done.
The engineers who designed and integrated the coding numbers into the ECM did it for a valid reason.
Otherwise, they would not have wasted their time and efforts...

WWDiesel · **Posted:** Thu Mar 17, 2022 11:44 pm

There is a valid explanation as to why injector coding in the ECM should be performed.
Will it run without doing this, yes it will, but it will not be at its optimum performance or efficiency.

Read on:
Coding an injector is a vital part of the testing and repairing of injectors, and provides an essential connection between the physical injector firing events and the digital Electronic Control Unit (ECU) of the vehicle’s engine controlling the injectors firing events.
Coding identifies the numerous operating tolerances of that particular injector and generates a string of digits containing this information which can be understood by the vehicle’s ECU. The ECU will then deliver fuel to that cylinder via the injector with better precision and timing to improve overall running and efficiency.
It is imperative that coding is done with accuracy because fuel delivery and injector timing will be tailored exactly according to the properties of the injector that the ECU will think exists for that cylinder based on the code it has been provided.
Using general, broad codes or incorrect codes could inform the ECU of the wrong set of properties for that injector such as incorrect nozzle opening time, nozzle opening pressure, flow rate, and injector timing.
The resulting engine performance will suffer including higher fuel consumption, imbalanced running, and poor high NOx emissions. It is certainly advisable to perform coding after testing or replacing injectors to ensure that all its measurements are within tolerances and that the resulting codes will provide the ECU with this very important information.
Coding is the logical step for shops to perform as part of injector testing, fuel system repairs, or injector replacement that they carry out while striving to improve their shops overall repair quality and success rates.

TURBO-DIESEL-FREAK · **Joined:** Sat Apr 17, 2010 3:29 pm **Posts:** 1167

WWDiesel wrote:

There is a valid explanation as to why injector coding in the ECM should be performed.
Will it run without doing this, yes it will, but it will not be at its optimum performance or efficiency.

Read on:
Coding an injector is a vital part of the testing and repairing of injectors, and provides an essential connection between the physical injector firing events and the digital Electronic Control Unit (ECU) of the vehicle’s engine controlling the injectors firing events.
Coding identifies the numerous operating tolerances of that particular injector and generates a string of digits containing this information which can be understood by the vehicle’s ECU. The ECU will then deliver fuel to that cylinder via the injector with better precision and timing to improve overall running and efficiency.
It is imperative that coding is done with accuracy because fuel delivery and injector timing will be tailored exactly according to the properties of the injector that the ECU will think exists for that cylinder based on the code it has been provided.
Using general, broad codes or incorrect codes could inform the ECU of the wrong set of properties for that injector such as incorrect nozzle opening time, nozzle opening pressure, flow rate, and injector timing.
The resulting engine performance will suffer including higher fuel consumption, imbalanced running, and poor high NOx emissions. It is certainly advisable to perform coding after testing injectors to ensure that all its measurements are within tolerances and that the resulting codes will provide the ECU with this very important information.
Coding is the logical step for shops to perform as part of injector testing, fuel system repairs, or injector replacement that they carry out while striving to improve their shops overall repair quality and success rates.

THANK YOU, WWDIESEL!!

According to PZKW108, getting the injectors properly coded is not an expensive thing to do, so there is no excuse for not doing this.

WWDiesel · **Posted:** Sat Mar 19, 2022 2:55 am

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Injector Coding

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