has anyone noticed a drop in mileage after they put an aftermarket muffler on? My instant readout mpg has dropped 3-4 miles per gallon after the muffler install. And I've put around 1000 miles on it since. I also have a k&n drop in
everyone I just drove right at 389 miles @constant 80-82 mph, I used 11.995 gallons. Which means I had around 1.2 gallons left. My avg was 32.5 for this tank. Is this good or bad? I can only manage right around 400 miles for a full tank
I have wind noise coming from the drivers side window right where the mirror attaches to the door. This is the only place I hear any wind coming in. Does anyone else have this problem, what can I do to fix it???