mainly my fault I changed the pcv valve to fit the nizpro rocker garnish. It was not sealing properly causing air into the front crankcase Bps changed it the car went from 309rwkw to 360rwkw. Then fixed plenum leak for the 3rd time. Also fixed the lower half of the intake manifold as it was not sealing properly. at the bottom of my invoice it reads " Repairs and modifications resulted in over 390rwkw. Please note this power output far exceeds the mechanical limits of the engines internal componets. etc etc"