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increase gas mileage/ Horse Power??

Discussion in 'Chevy Trucks' started by UPS, Nov 18, 2003.

  1. UPS

    UPS Junior Member
    Messages: 16

    Any of you guys out there tried the "increase gas mileage gadgets"???

    ie: tornado air filter, engine ionizer, etc.???

    Are all these things what I think they are or does something out there really work?

    Thanks for any help!