Ford Repair: turbonator, fuel economy, fuel efficiency

Question
i've got a 91 explorer 4dr,4wd. in my desperate attempt to increase fuel efficiency i came across an acessory (online, of course) called the turbonator. it looks promising, but is it worth it? it's some kind of air filter that makes the air cyclone through the intake. thanks alot!

Answer
Besides changing driving habits, keeping the tires at the factory recommended pressure and replacing worn Spark Plugs and a dirty Air Filter are the best ways to improve fuel economy.  I have never heard of the "Turbonator", but I wouldn't spend a lot of money on it, unless I spoke to someone personally who has one, and they have used it for a few months and documented a significant improvement in fuel economy on a regular basis.

I hope this helps,
Dave