I wouldn't give it that much hp off a t25. He'll prolly get an extra 30whp with his stock internals and thier fuel upgrades. - From thier kit, which has no intercooler, he will be unable to run more then 5psi. Maybe LESS then that because the T25's get incredibly hot, and tend to break down quickly. I would sugest upgrading to a T3 or a Hybrid t3/t4, and getting an intercooler. At any rate I would be very worried about heat and detonation.