i currently have a peakboost turbo kit w/ 38mm tial WG. 3"exh. i started noticing it creep up recently. im running a 7psi spring but im reading about 9.5psi pass 7k rpm. the only thing i did was add methanol injection and mbc. i unhooked both and i still get boost creep.

is there anything i can do to prevent it?
TIA

 

larger gate or run more boost