question about moving the little wheel in the AFM maybe it's just me being thick but when you say back do you mean anti-clockwise or clockwise??? and would it work on my 1987 golf gti as i don't know what to try and do next, i put a K+N air filter but that made no difference because of the AFM i've also thinking about putting iridium spark plugs in does anyone know if that'll make a difference??? Please help