Where are the EGR vs load and other EGR control tables in 94170015 or any of the EVO8 ROMs for that matter? I've searched and haven't found this information. I don't want to disable EGR, I just want to work with its tuning to try and get a little better fuel economy.

Thanks,
Kevin

 

Does anybody know where these are? If not, is there a guide for poking around in the hex files to find tables like this?

 

I don't know if they are defined or not, but if a map is not defined for my XML, I just look at the code in hex for a rom where it is defined and then search for the same code in my rom. It doesn't always work because there are code differences between roms but it works most of the time.

 

Hope this helps, just matched it up to my 96530006 dissassembly. These are the main items for EGR duty cycle. There are also ignition trim adjustments for EGR. May even be fuel adjustments, not sure on that.

Sub_1DDB0 is the Main EGR Solenoid sub
Sub_1DE78 controls the conditions that activate the EGR (ECT primarily)
Sub_1DF14 controls EGR duty cycle output

Main EGR Duty Table Address: 4743 (3D)
Engine Speed: 6A2C (10 elements)
Load: 6A4A (11 elements)


Secondary EGR Duty Table Address: 46C9 (3D)
Engine Speed: 6A2C (10 elements)
Load: 6A4A (11 elements)
I believe this is for when the car is stationary, but not certain

EGR Activation Address: 47B8 (2D)
Coolant Temp: 67A2 (8 elements)

TPS Min Address: 1DCC (word length)


I haven't worked it out all the way, but I'm about 80% sure there is a high speed enleanment that takes place under certain conditions that would happen above like 50mph. Haven't seen it mentioned previously, but that's what it seems to be. Also has some ignition adjustments to go with it.

 

Thanks 03whitegsr, works great!

 

The main EGR table address exists in speed density 94172715 Tephra V7, but the engine speed and load axes are incorrect. Any suggestions on the correct axis definitions here? Thanks!