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  1. #1

    [OP] Junior Member

    Join Date
    Jan 1970
    Long Beach, CA

    Default Loathe and want to eliminate that lag? You know the one. Making a lane change...

    It's the #1 selling item in our store, for the past 3 years.

    Easy plug and play and less than 5 minutes to install.

    30 day money back guarantee, no questions asked.
    Read about it here and read the testimonials!
    Home SMART MADNESS - smart car Parts and Accessories

  2. #2

    Junior Member

    Join Date
    Dec 1969
    Lutz, FL
    Anyone here that has put the "Sprint Booster" ($300) into their Smart? Your thoughts?

  3. #3


    Join Date
    Jul 2015
    Check out the new booster that Smartmadness is offering on their websight; Home SMART MADNESS - smart car Parts and Accessories. I think you will like this one better then the sprint booster.

  4. #4

    Junior Member

    Join Date
    Jul 2016

    Default 450/451 upgrade

    try a nitro chip from ebay for $10 i bought one love it 35% more power 25% more torque i have a couple of the more expenesive chip they all do the same thing the nitro gives you more power faster pedal response smoother shifting for $10 bucks

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