Crank hard start goes to high idle

[mtrammell]

Hello I have a 2013 silverado, it has the AFM deleted in the tune and has a BTR stage 1 camshaft. After a couple of years of running fine, it has started acting up, hard start in OL , I have to push on the accelerator to get it to start. Once it starts it accelerates between 1900 and 2200ish rpms and doesnt come back down. Once it goes into CL it starts and idles normally except today after going into CL it idles in the 2000s range. Im also currently having an issue with the BCM and I am waiting on a J2534 to come in so I can access it. Issues with BCM were caused after I loaded a different tune ( I didnt remove the radio fuse (aftermarket) and I forgot to do a write entire and wound up activating the vats system which is now disabled on the latest tune file)

Attached is the log file from today and tune file currently programmed. Any thoughts ,suggestions would be helpful. Thanks 02082025 modded.hpt feb wtf.hpl

[blindsquirrel]

77% ethanol (or so the unreliable source says, the virtual flex algorithm). Trims are +60% and the O2s are still nailed to the floor lean. How about disable virtual flex which sucks and does stuff like this all the time, make sure it has only normal gasoline in the tank, reset the trims, and see how it acts.

You also need to go through the DTC list. You have a lot of changes there from the stock 2013 Silverado 1500 LC9 compare file I checked against. Loooots of codes are MIL on First Error that really shouldn't ever be, and quite a few turned on that I'm pretty sure should have been left No Error Reported.

[mtrammell]

Thanks , Ill make the changes , I had not looked at the error code list , I could blame that on the guy who "tuned" it who didnt really do much except disable the AFM and supposdly ran it on a dyno.