How do you guys feel about mail in tunes? Im thinking of having my bolt on stock g8 gt tuned. By mail. If its a good idea.... the reason i ask about mail in tune compared to dyno tune. Funds for the g8 project are dwindling. I live in phila and tunes from shops in this area are quite expensive. Help me guys. I would like to learn how to tune. Just cant find no one to teach or show me.