So according to CMS there is an issue with the 2016 Camaro SS ECM when trying to utilize the physical ethanol sensor. It will not read past a certain percentage. I was about to install the sensor on my car but with this info I opted not to chase it. What I did attempt to try was the virtual sensor. I enabled it, changed the stoich table and saw the ethanol percentage change over the course of a few miles. It was very close to what I calculated it should be for the E10 / E85 (51.2%) mix I had in the tank. The fuel trims fell into line.
Here's where things didn't work out so well...
1. I noticed that when I was supposed to be in PE mode the EQ ratio commanded stayed at 1.000.
2. It did not appear any of the flex fuel timing adders were being utilized.
3. The reported fuel type in the scanner was "Gas"
I could not find any tables that needed to be altered. Has anyone run into this before? Any suggestions on getting it to use the alcohol tables?
Thanks,
Tim