Well lets see...
You could buy one of those magnets that clips around the fuel line....
You can buy a kit that lets you burn water (converts water to HHO) Bolts right up to your existing carb...
You could but a Tornado insert for the air cleaner but I don't know if they make one for the FJ40...
You could run helium in your tires at 45 psi...
Guys, did I miss anything? Feel free to add to this, uh, list of GREAT MPG ENHANCERS!!!
