Check this product out: http://www.bb4n.org/?axel=49 It is the missing piece in my puzzle. Fuel Saver 27% Spark Plugs 10% Muffler 10% Pulleys 5% Tornado 23% K&N 7% Synthetic Lube 8% Air/Fuel Ratio Gauge 6% Spoilers/Wings 3% Wax Job 1% Total = 100% fuel savings I am now at 100% efficiency, and never have to stop for gas!! The miracle of science. Any more fuel efficient mods and I'll have to stop and take some gas out. P.S. I did borrow this post from another forum but it was too good to pass up.