TURBO UPGRADE: The factory turbo is able to run boosts up to 14 psi (1 bar). Trying to boost above this is plain useless. . For anything over 14 psi a new block with forged pistons is necessary.
found that.. so 12 psi should of been fine.
http://www.toysport.com/technical%20...tech_notes.htm
thats were i found it. just a little lite reading about different things.