2009 Silverado LTZ, Truck Norris NSR, stock exhaust
Wideband is not installed yet
I followed Matt Stanfords video on Idle Startup Tune here as he gave specifics from his experience with the Truck Norris
https://www.youtube.com/watch?v=1QIRgaGfzWk
It starts and idles ok but I'm experiencing a couple of things that I need to get resolved before I feel comfortable driving it to get the wide band bung welded in. Once it gets warm, Stabilitrak warnings are set and the throttle hangs. Sometimes the throttle is just very slow on the return and sometimes it sticks at 2-3K RPM and holds.
I've uploaded my stock tune (with DOD turned off), the current idle tune, and a log of the slow throttle. On the log, I couldn't get it to stick but you can certainly see the slow throttle return. Any advice is welcome as this is the first time I've worked on a LS with anything bigger than a Stage 1.
2009 Silverado LTZ - Stock DOD Delete.hpt
2009 Silverado LTZ - DOD Delete - Truck Norris 20240511 - Start.hpt
20240513 Throttle Slow.hpl