2 cans are WAY too much.MKIIIpowered said:Pretty much all the Atlanta guys are using it. I personally felt a significate increase in driveablility after using it. I think the consensus here is that you put two cans in on a fill up. There will be a brown coating on the plugs and exhaust but Ive been assured that it perfectly normal. I actually stop buying race gas after using it. Although adding with race gas would for sure raise the octane count up.