The other morning on my way into work I downshifted into third and noticed boost spiking to 19 , almost 20. Not sure if this is an issue I should have addressed but it happens once in a blue moon. Stock Turbo, STGII OTS Map.
You could try flashing their LWG map if you are really concerned. Was it after you hit the gas after downshifting or just the process of downshifting?
Hmm. My car seems to love the cold weather. I'm sure it's learned anything problematic out by now, but it's never seemed to have any problems. That may because SS set it's targets a little higher than it can usually reach, if I understood him right. I guess you could call my fuel maps a little overzealous.