Got my Gryphon on Wed. and have not had the p061f code pop up. I only got the canned tunes for now but I think I'll send in my order for a custom tune this weekend. I did get the code p061b, which I've never seen before, on the second day but cleared it and have not had a problem since and it's about 250 miles later. That code means Powertrain: Internal Control Module Torque Calculation Performance. I searched it on this forum and a few other people had this happen. It is supposed to appear right after the tow tune is loaded and the truck is started. I got the code about 40 miles after the tune was loaded and my truck went into limp mode just like with the p061f. Some replies to the threads on this issue stated that it happens with the canned tow tune, immediately following a loaded tune, and with a cold air intake. Everything basically applied to my situation. It was 40 miles after the loading of the tune but it was right when I started my truck and when I was pulling up a hill to get out of a driveway. Bill had stepped on a few of those and said that it was most likely because of running the tow tune with a CAI and that a custom tune will fix it. So for now I'm going to fill up this weekend with 93 and try that tune but I'll be waiting for my custom 87 perf tune to be done. Don't worry, I'll keep you guys updated.
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