I have both the xtream street and the xtream race tunes. the race tunes has lots of power and lots of smoke. the street tunes makes good power as well, but not near as much smoke as the race tune.oliver-2150 said:what tunes did you get from him? i ordered my sct from him the other day. hopefully it will be here tuesday. i got his three basic tunes, street, tow, econo. i might try his xtreme tune sometime and go play. how much smoke does it blow? the more the better!! also what other mods do you have and what are you planning?