N/A Tune on 94 you can run like 32* of WOT timing. It's hilarious.... obviously depending on mods... IIRC my car got up to 36* with the belt off ...lol. It actually wasn't that bad, it was about as fast as my rocker'd L36 lol. (MY GTP has cam/heads/headers etc..)

I know of a few people up here who will switch to a no S/C tune when the snow hits up here.