I got my Gryphon the other day and I love it. I have been running my custom 87 tow tune until tonight when I had about an 1/8 of a tank of 87 octane left and filled up with E85 to try my E85 custom performance tune. I pulled out of the parking lot after reprogramming, and my truck went into Engine Failsafe Mode and was running very ruff. I pulled into the next parking lot and pulled code P061B Internal Torque Calculation Performance, I shut the truck off, cleared the code, restarted the truck and drove it home and never had a problem again. I am thinking the 87 octane left in the fuel line is what caused the problem, but I would like to get a few more ideas from the PHP gang.
Thanks, Trent
