ok for you guy wondering about the boost potential of the x ive got it hear. 14.5 psi that what ive got so far and im in the works to get more. i have thoue blown one engine but not from this actually it was from a poor piston. my #1 cylinder went due from a cracked piston it scared the block and it was more cost effective to throw a new block in than hone it.but if u guys have any ? or just wont to pic my brain just ask im more than willing to divulge some secrets! if it dosent look fast it probably is