Hello, I have a 2010 Silverado 2wd that I have swapped an LSX 454 into. Got it back from the shop and it was fine then I found a PCV line was off when they tuned in now hooked it back up and engine has developed idle surge and slight hesitation at light throttle position. Engine seems to run fine under load and at higher RMPs. Basically it wont start and hold idle when cold, and once warm has a erratic idle surge. Any help would GREATLY be appreciated as this is my daily driver as my other truck got stolen. Thanks, Chad. I attached tune, but if you would like to see logs please let me know what PID's to include.
Thanks again,