I recently replaced the spark plugs and wires on my 01 PreRunner Dbl Cab. I travel 45 miles to work everyday, all interstate, and I have noticed now, after changing the plugs and wires, that I hear what sounds like "static" through my speakers when the radio is on. When you let off the gas pedal the noise is more like a popping sound, like the popping of a spark plug sparking. I have also noticed that I am now getting about 45-50 miles less between fuel stops. Any suggestions? Thanks.