EFIDynoTuning Forum

I have TFS-89036 installed and set at 45PSI. I'm following the fueling page in the guide, I've attached a screenshot of the values read from the ECU before modification. Do the AHISL (255.996 lbs/hr) and ALOSL (286.184 lbs/hr) values make sense, or is there a possible mismatch between the adx/xdf and my ecu?

Also, just to confirm, SP**Global Fuel K-Constant is the value to set to 30, as per the guide?

That all looks correct. If you want to see the stock values you have to open the scaling percentage - do not change scalar and set it to 1.

ADX is only used for datalogging has nothing to do with the tune.

You can only change 1 value at a time in a specific order as specified in the fuel write up on the homepage.

Not quite sure about how to adapt the fueling writeup to tunerpro, since the SP integral to the definition file. The default values from my ECU for AP** AHISL and SP** Global Fuel K-Constant give a DO NOT CHANGE - Scaling Percentage of 13.3171, but according to the writeup it should be closer to 19#/30?

So to modify the bin with the TFS injector values (HS=38.557, BPT=0.00001284, LS=38.557, SP:38.557/30 = 1.2853), I would:
1. set SP** Global Fuel K-Constant = 30
2. set SP** (WARNING) AHISL - Injector High Slope = 38.557 ? Or scale by SP to 30? Not sure as this param used to calculate the Scaling Percentage param.

3. set SP** ALOSL - Injector Low Slope to 38.557 scaled by SP = 30?
4. set SP** FUEL_BRKPT - Injector Breakpoint (2 of 2) to 0.00001284 scaled by SP = 9.6e-6?

And then would I need to rescale the remaining tables/params (maf curves, SARCHG, etc), or would tunerpro do that for me with this xdf?

there is no such thing as scaling with the k-constant

you simply put in the actual values in the order the fuel write up tells you to