Just wondering whats the best way to get power from my rst its already got a bayoo chip , piper cam/pulley,grs i/c , samcos d/v , all the usual , its making 156bhp@wheels @hitting15psi holding13 , its got a standard turbo on it with no problems there and the engine is about 2 months old but already bored with power , havnt got crazy money to spend , but is this already on the limit for my cvh ??