i have a 91 turbo and i've installed an apex'i AVC-R and HKS FCD, i also hav an apex'i intake, CT20B turbo, spearco inercooler, Blitz down pipe and Greddy SP exhaust. the downpipe and exhaust and intercooler wear just added but i've had the other things on for couples months. my low boost is 10psi and high boost is 15psi, only run high wen street racing, not often. today i was driving on the high way like i normally do at low boost and the car just started boosting to 18psi and hitting fuel cut, the AVC-r's set boost is being overboosted, could a vacum hose hav fallen off or something? i looked but im not a mechanic, any ideas? thanks in advance.