hi at all i have a go tech .21 stage 5 mass mod that my boss gave me he won it in the sa state title raffal and i would like some pointers on how thay perform and how should i have i tuned . the tune that i have is cool i have it set with a phat (rich) low end and a lean high end it works well but would like ta know if i can get more out of it with out any damage cheers lads