I have an aFe intake, dpf delete pipe and SCT livewire running canned performance tune. I ran the truck for about 120 miles with the dpf delete and no sensors plugged in (high idle was there about 1k rpm)
I noticed the stumbling idle once, then realized I needed to plug in the sensors and just tie them back (dpf delete pipe w/o bungs). So with that done, randomly, when I cold start (cold start as in, the truck hasn't run for a few hours, not necessarily cold temperatures) the truck has a stumbling almost loping idle for about 30-45 seconds then no issues.... Could this be a side effect of crappy canned tunes or do I need to look at something?
The first time it did it, I plugged the sensors in the next day and also changed the fuel filters (Motorcraft of course) and it has done it twice since then. Randomly, usually after sitting 8 or so hours at work.