What is the best way to find out what is done to my blaster I can't get ahold of the guy who I bought it from and I only paid 400 dollars for it and it was in pieces when i bought it basically didn' have anything put on it but the engine when I got it but came with a two exhaust one I know is dg the other not sure what it is but the person I bought it from said it was the better of the two The bike runs great but i want to make it a bit faster so i can run with and beat 400exs that my friends have