I've read on a few posts that using warm air intake from under the hood rather then cold outside air helps mpg a little. I've got my cold air snorkel removed from the air box for the winter, of course it would help if I didn't floor it at least once a day

Willie

 

when they say your timing is 10 degrees Retarded they are referring to Cam timing NOT ignition timing... which is correct... that timing is retarded... but ignition and cam timing are totally different but dependent...