ECU 413/506 bigger fuel injectors

[MGH]

When adjusting the injector constant in tunerpro, the LOAD is also
changed. LOAD is used for almost everything in the ECU. so to get LOAD right again,

we have to change 2 numbers.the addresses in the 506's.
93AC 93BC.

They are both 50, if you switch from std.16lbs to 24lbs. 24/16 = 0.67.

injector constant=0.67

50*0.67=33.5. put 33 in the the 2 addresses.

now we get a checksum error.there are 3 checksums, there are only one in tunerpro.
in the 506 ecu.
checksum1. data start 2080. data end 3FFF. store data FFFA. LSB First set.
checksum2. data start 4000. data end D001. store data FFFC. LSB First set.
checksum3. data start D002. data end E7BD. store data E7BE. LSB First not set.

there is a problem in tunerpro, you have set LSB each time you start tunerpro.

also has data on 413

English is not my first language.:)

[sublimation]

When adjusting the injector constant in tunerpro, the LOAD is also
changed. LOAD is used for almost everything in the ECU. so to get LOAD right again,

we have to change 7 numbers.the addresses in the 506's.
49A7 5166 93AC 93BC AFBF 5B14 9A8B.

They are all 50, if you switch from std.16lbs to 24lbs. 24/16 = 0.67.

injector constant=0.67

50*0.67=33.5. put 33 in the the 7 addresses.

now we get a checksum error.there are 3 checksums, there are only one in tunerpro.
in the 506 ecu.
checksum1. data start 2080. data end 3FFF. store data FFFA. LSB First set.
checksum2. data start 4000. data end D001. store data FFFC. LSB First set.
checksum3. data start D002. data end E7BD. store data E7BE. LSB First not set.

there is a problem in tunerpro, you have set LSB each time you start tunerpro.

also has data on 413

English is not my first language.:)

This is really useful information.

Is there away to change the numbers in tunerpro?

[MGH]

Yes it is easy to change in tunerpro.
If there is any interest, I can upload a tunerpro XDF file for this and Injector lag time vs. battery voltage

[sublimation]

Yes it is easy to change in tunerpro.
If there is any interest, I can upload a tunerpro XDF file for this and Injector lag time vs. battery voltage

I would appreciate that. I'm having a hard time getting my load values and injector dead-times correct for my bigger injectors.

[MGH]

I Can't upload XDF files here.
I could email it to you.

[sublimation]

I Can't upload XDF files here.
I could email it to you.

Mike thanks again.

For everyone else's reference, the information above was completely correct - MGH was a huge help.

[thedean]

Mike thanks again.

For everyone else's reference, the information above was completely correct - MGH was a huge help.

Sublimation, could you email this to me as well? Also, I am confused as to what "Load" is and how it is calculated in the 506/413, please shoot me a PM if you can help.

Thanks,

Michon

[sublimation]

Sublimation, could you email this to me as well? Also, I am confused as to what "Load" is and how it is calculated in the 506/413, please shoot me a PM if you can help.

Thanks,

Michon

From what I understand, load is represented as the total time the injectors are on or opened per cycle of the engine.

Sorta a confusing way to scale load compared to say kg/s of air through the MAF.

If it's okay with MGH, i'd be happy to share what he sent me.

But if you change the injector constant that is defined in the the TunerPro .xdf and then modify the values of the addresses he has listed above, you should be good to go.

[MGH]

I have been working on the code/BIN in ida pro disassembler. This LOAD is a number for how hard the engine is working.
Normally you change all the numbers and tables what uses LOAD.
This way is a lot easier, and the result is the same.