Also im sure jj knows way more then i do on this subject but i didnt have good luck on stock h22 pistons running boost so i wouldnt suggest running over 8 pounds just my two cents . Mine was a beast on 8 pounds on the street when i had it in the si hatch and it wasnt half the setup you got so im sure yours is alot of fun stop by and take me for a ride if you get a chance.