Had the Charcoal cannister replaced and since then MPG has dropped from 32 MPG Highway down to approx 25 mpg Hwy
also when passing many "Your speed is" signs it appears that I am driving slower than the sign indicates e.g. Sign says 42 mph and speedo says 45 mph and I'm wondering if the odometer is under performing and when I've driven a reported 300 miles it was only say 250 actual?