My b5 bailed me out today. It was the first race of the mountian rc pro series and all friday during practices my B7 in my buggy and B5 in my truggy ran great. Then saturday came and both went to heck. Couldnt get any bottem end pwer out of them By the end of the day the B5 was working pretty good but the B7 couldnt find the tune. So for the final i ran the B5 in both truggy and buggy. It sure got its work out this weekend .