hi new to this world of talk , just joined site .can anyone help or direct me to advice regarding my 4x4 sapth .had 24v twin turbo fitted by topboss tuning derby .picked up after two years drove home ,vibration thru floor , sooting up plugs ,oil in spark plug holes numbers 2,3;4 h .his comments silicone rubbe r sealant around existing camshaft cover seals,injectors fitted running in type ,gave me 6 blue,s to fit @ MAPPERS? [/B]