Flex Fuel Sensor Not Accurate

[edcmat-l1]

I think you'd increase the 100% cell by however much it takes to put the 60% cell at the right spot, when the table is interpolated. If I'm understanding what's been said earlier.

That's correct. If your 93 is 10% you'd want to interpolate from the 12% cell to 100%. So you leave the 10% and lower part of the table alone.

[sgod1100]

That's correct. If your 93 is 10% you'd want to interpolate from the 12% cell to 100%. So you leave the 10% and lower part of the table alone.

Got it, thanks again

[sgod1100]

Yes. Once your base calibration is done, this is where you should bring your trims back in line on E if they're off. And you use your alcohol PE to adjust your WOT A/F on E. The idea is you don't want to touch your base calibration once it's done.

So, I was re-visiting this thread and when you say adjusting your alcohol PE table to adjust afr, do you mean "raping" the alcohol PE table slightly? Since the maf curve should no longer be touched?

[edcmat-l1]

So, I was re-visiting this thread and when you say adjusting your alcohol PE table to adjust afr, do you mean "raping" the alcohol PE table slightly? Since the maf curve should no longer be touched?

Yes. Once all your petrol tuning is done and spot on, you don't want to touch it. Any adjustments needed to be made for E tuning need to be made to alcohol tables only. That means skewing the PE if needed. I always start with copying the petrol PE to the alcohol. If it needs tweaking, so be it. In OE FF calibrations the alcohol PE is different from the petrol PE. In a perfect world they'd be the same but that never happens.

[sgod1100]

Yes. Once all your petrol tuning is done and spot on, you don't want to touch it. Any adjustments needed to be made for E tuning need to be made to alcohol tables only. That means skewing the PE if needed. I always start with copying the petrol PE to the alcohol. If it needs tweaking, so be it. In OE FF calibrations the alcohol PE is different from the petrol PE. In a perfect world they'd be the same but that never happens.

Got it. Thanks again for all the info you have given me/us on this thread!