I just recently got a boost controller from ebay, and I have it installed and it will only let me boost up to 14 psi, from 12 psi stock. The Boost controller was 5 dollars on ebay. its a MBC. If anyone owns one or has had this probelm before, can you help me out??

 

I don't know what that could be it might just be a cheap boost controller you should get a turbo xs you can get one for around 30 dollars and it won't leak, and gos to the max 15 PSI(1-30 psi).