guys, correct me if I'm wrong, but if you're getting flashed, dont bother getting the timing adjustment at all. The +2 is just an adjust to the baseline timing. Which means you'll always start @ +2. Then with the crappy CA gas we have out here, as you increase the throttle, my belief is that the timing will retard back to baseline anyway so your motor will fire correctly. When you get flashed, they will adjust your A/F so it will work across the entire rpm range, & likely adjust your timing as they see fit.
I'm not entirely sure of this Dave and I do not know how exactly the +2 and the TS reflash works together. You do bring up a good point Tho. But, we did the +2 at the track and with the BDC at +14 I ran faster 1/4 times then with stock timing. I can't be 100% sure this was all due to the +2 but it did help in my opinion.