Question, Winfield: I installed your base/OTS tune a few days ago, and now I have a persistent CEL. The AccessPort doesn't show any codes to clear, and I did reset the ECU and TCM (twice) with 5-15 minutes between the reset and re-starting the truck, but the CEL persists. Performance seems fine, and I put my foot into it yesterday and the AP was showing almost 500HP. I do have JLT catch can installed, but I think I mentioned that in my order. Should I disconnect the battery for some time to try and get the code to clear? I do have Forscan available, so I could look with that software to see if there's a stored code that the AP doesn't see. Thanks, TR.