Cars are grossly inefficient. Just feel the heat coming off the engine. Lots of companies are trying to capitalize on this by creating snake oil products to boost MPG. I’ve tried the magnets and some other tools, only to be disappointed.
But what I have found that works is not gimmicky at all, but based on pure science – better spark plugs and better air filter.
If your engine can spark hotter, more fuel will burn (lots of exhaust is unburned fuel vapor). And that means more miles for every gallon.
Pulstar Spark Plugs Burn Hotter for better Gas Mileage
Here is a nifty video showing the plug in action: Pulstar Spark Plug Test
I have tried splitfire and halo spark plugs in the past, only to find moderate success. But I recently ran across Pulstar Iridium spark plugs. The marketing touts a hotter burn from a better capacitor (iridium). The plugs are priced about 4 times more than other advanced plugs, but the premium material pays for itself in about 5 tanks of gas (or about 2 months). In my 2008 Subaru I have seen on average a 20 percent increase in gas mileage, reaching up to 30 percent when I drive 45 to 50 MPH. Of course, savings will vary by car.
Gas Milease, Horsepower and Torque Gains from Pulstar Spark Plug
I also run a permanent air filter from KN. I’ve forked over the $35 on my last four cars and trucks only to see a consistent MPG increase. Like the spark plugs, its a one time cost and pays for itself in a matter of months (not to mention, no more disposable air filters).
Both products provide greater torque and horsepower too.
