I tested the fuel from my tank after a long drive to make sure it was mixed well. It's a return system and I put about 75 miles on it. My sensor reads 78.4% but my Super tester says I'm E85 and the fuel in my drums test to E85.
I've had to adjust the 100% and interpolate down to get my stoich on E85 to be correct. This is the second sensor I've tried and I don't think there is a calibration besides the stoich table.
Maybe this is why GM only goes to 80.03% in the tune.
My percentage is stable while I drive and adjusts with .1% difference so I don't think it's bubbles. The sensor is on the return line #6
LTFTs look a little rich on the log because the car soaked at the store before the log. Previously all were -1
Any ideas?
E67 ECM
Mark
TTTTTTTTTTTTTTTT.hpl
FINAL FINAL FLEX FUEL TUNE.hpt