Contour Enthusiasts Group Archives Forums General Troubleshooting Bad fuel mileage after fuel filter change?

I recently changed my fuel filter on my tour and noticed a drop in mileage. The motor seems more smooth...a little but I notice my gas needle is dropping faster than before the filter change. It has been 3 weeks consistantly and I have been light on the throttle. There are different way's of changing the filter..is any way going to give different results. I didn't depressurize my fuel system like recommended but was told it didnt really matter. Should I have and would there be a way to correct it. Thanks in advance for any reply's