hi guys ive asked before about this problem and still cant sus it out ive fitted ralliart ecu to my 5 my actuator was knackered so yesterday i fitted my forge one its had new ngk iridiums when i accellerate hard up to 1bar and above it pulls back as if its running on 3 cylinders im running a blitz dsbc to up the boost and disconnected it like weebl said on saturday and connected the boost pipes back standard straight to the actuator it boosted up to about 0.8 bar and was slow but completely fine didnt run poor at all but when i go above it plays up like hell and no i havent changed the fuel pump yet but the filter has been done