hybrid turbo with adjustible actuator.. the flat can open fullt in the elbow, i checked it while twas all out on the ground.. i planned on running it at a bar boost, iv an adjustoble fuel pressure reg, steel head gasket and just built head.. iv 11 bar compression in all 6 clyinders.. i only drove it over the road booted hard once so iv no damage done.. kinda scratching my head as to what to check now yano lads