Dawes Valve, Needle Valve Fit For Nissan GU Patrol ZD30 Direct InjectionItem Number: VALVE 001 Specification: Dawes valve, needle valve kit All Dawes valves come fitted with the heavy duty spring and Locking nut ring It is proven that the needle valve, when used with a Dawes, makes the setup a crap load better, same as adjusting the VNT screw. After some testing and tuning show that the engine running nicely indeed. At around 100kph the boost sits between 11 12 psi and under gentle load it's about 14. 5psi. If floor it