Between August 2007 and Febuary 2008, Jerry and Kathy Wills drove 28,000 miles criss-crossing America. They drove a 1999 seven thousand pound, K1500 Chevy Suburban. At the inception of their journey this 4 wheel drive vehicle only averaged 10 miles per gallon. Gasoline prices were soaring above $3.50 a gallon.

They installed a high volumn air filter, hydrogen gas generator, high output ignition and gas / water devices. Nothing worked as advertised. About to give up on finding a solution, they found something providing an extra 5 miles per gallon... a 50% increase!   How did they do it?  They installed Pulstar plugs...

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