Hi all, I've had my 300zx now for a few months and decided about a month ago to change the cone filter at the front as the old one was literally black and had crumpled where I guess the engine had been trying to suck air through a blocked filter. Now she has a lovely new one....but the car now seems to overfuel and drink petrol like it's going out of fashion and when I'm driving and open my window I get a smell of exhaust fumes coming in..:-( it's really frustrating. I'm thinking of cleaning the mass air flow sensor with proper cleaner for the job but any advice I'd gladly receive. I can't even go to my first meeting as it would cost the earth on fuel. Very sad. :hang:

The AIV units sit under the dirt shields in the front wings, they run to the exhausts and engine, sometimes you might hear a gurgling sound from the wing if so that is the unit. I think they are called air injection valves basicly help to cool the cats as far as i know. hope that helps