i boosted a b18 with a t3/t4 and drove it for a year and a half before the head gasket blew(bad fan switch caused an overheat...not the turbo). all i had done to the car was FMU(boost referenced), check valves for the map, and retarded the ignition timing. i tuned fuel pressure and ignition timing by checking the plugs. i believe id still have the car today if the fan switch would not have messed up. i was only running 8 psi on the wastegate. and never once had a problem with detonation. i believe ur motor can handle more boost but without any type of tuning like a hondata your taking a risk. i didnt have any type of ems or tune other than what i did to get it to run good on 8 psi.