First of all sorry in original posting meant 300E and not 900E - was thinking of my Saab 900T. Anyways is there a way to adjust the air fuel mixture to make the car run a bit leaner? The tech that ran my successful clean air test told me that my car seems to run very rich and joked by saying that I must drag a fuel tank behind because I must get awful gas mileage - I have checked my fuel consumption and on the highway cruising at between 120 km/h and 140 km/h it seems to get aprox 22 mpg - is this OK for a 300E