I didn't get a chance to post friday, but I loaded up the newest SJR UDC tune, made a few tweaks to my UDC tune and headed out for the weekend.
The grid ding must be a SSR thing, as I don't have a grid and don't have an issue, even at 30° starts this weekend.
I am really liking what UDC has done for my truck for towing. I was at about 17-17.3K GCW this weekend, with a 29' barn door, aka TT. I pulled 6-7% grades at 2200-2300 rpms in 5th, about 65-75% load, 22-24 psi boost and 1100-1150° max. I was at that boost/EGT with a 2,500 lb lighter load last year. As far as low speed driving it's smoother and more responsive and while towing I didn't see any real smoke, even when the IAT's were in the 120° range.
It's a great product.