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fuel economy

  1. ECU Chip, yay or nay?

    Scion xB Engine, Tech, & Performance
    Has anyone plugged in an ECU (electronic control unit) chip into their on-board computer under the dash? I've talked to a few of my mechanic friends and they highly recommend getting one as they increase horse power and gas mileage. I've looked through the forums for anyone mentioning this and...
  2. New 1st Gen Owner in the Denver Area

    New Member Introductions
    Hello, I recently bought a 2005 xB with aftermarket 17" rims and the previous owner claimed that he got 35 mpg driving on the highway and I've been driving it for the last 2 weeks and am getting about 30 mpg as it's mixed city and highway, plus I have yet to figure out how to keep the RPM's...
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