kuamrod My engine has NGK platinum spark plugs but not sure about the correct gap. They've been in about a year and they are about 1.1mm. I've set them to 0.9mm and its made a slight improvement to the engine.
si_c1978 :whs: they run platinums as standard so unless your going iridium theres no real benefit. if you have bought them to already fit the z22se they should have the gap set anyway.