Prius out to race track, 15mpg

Discussion in 'Gen 3 Prius Fuel Economy' started by Bellwilliam, Nov 8, 2010.

  1. Bellwilliam

    Bellwilliam New Member

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    I own 2 races cars. I knew I had a ton of students. didn't want to tow race car there, taking students out (need to add a passenger seat, harness), car is loud (can't talk to passenger), just too much hassle. cost is much less in a Prius.

    like you said, it is always more convincing if you do it in a Prius than a race car (then it is the power, tires, suspension, or whatever they can think of).

    I will probably get a set of cheapo, but better tires next time. probably XS or something similar. should be able to dip below 1:40s with it.

    for those of you taking it to track. trick with Prius is brake release and trail brake
     
  2. 2k1Toaster

    2k1Toaster Brand New Prius Batteries

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    So you disable the traction control for your track runs?
     
  3. Bellwilliam

    Bellwilliam New Member

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    didn't know how. and I am 90% sure you can't.
    let me know if I am wrong.
     
  4. 2k1Toaster

    2k1Toaster Brand New Prius Batteries

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    I am 100% sure you can. :)

    Keep in mind Prius traction control is not to help or provide traction but to ease the load step on the MG's with sudden wheel spin. Therefore it is more dangerous than in a normal car for different reasons.

    I did it thismorning to get out of my street (8-10 inches of fresh powder ontop of a nice layer of thick ice up a steep grade to the access road). Wheel spin in necessary!

    As for how:
    1) Car off
    2) If not on flat surface, apply parking brake
    3) Turn on, (Not READY) -- Press Power button twice, with no foot on brake
    4) Pump gas pedal, pedal to the metal, 3 times
    5) Shift to neutral (note: this requires you to press down the brake pedal then hold the shifter over for a second or two. Release brake pedal after in neutral)
    6) Pump the gas pedal, pedal to the metal, 3 times
    7) Face towards Japan and sacrifice a small woodland creature to the Toyoda empire
    8) Put back in park
    9) Pump gas pedal 3 times again, same deal
    10) Car will beep, MFD will display "Problem!" and have a car with an '!' in it.
    11) Step on the brake, press the power button.

    Car will now be READY with the "Problem!" error. The engine will always run and not shut off regardless of stage. Traction control and stability control is disabled.

    If your wheel spins and then suddenly gets traction, all that excess energy is funneled through MG2 (I think MG2). That means lots of current, so overheating of the motor windings, perhaps other bads. Toyota explicitly states to never ever ever ever drive in this mode.

    And step 7 is merely a suggestion, it could be skipped if you are in a rush. :)
     
  5. Bellwilliam

    Bellwilliam New Member

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    wow, that's great to hear. I am sure I can drop another 2 seconds with that.
    I actually had a student that was a Toyota car designer, asked him about it, he said no. :rolleyes:
     
  6. Grumpy

    Grumpy Function > Form

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    Keep us posted on the result of further testing. At poor mileage of 14mpg, the smile per mile is through the roof. Tires screams and hanging on for dear life make me lol
     
  7. xs650

    xs650 Senior Member

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    Does that also turn off the stability control? On my other car I can turn off the traction control but the stability control remains on unless I turn that off too.
     
  8. Zythryn

    Zythryn Senior Member

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    Awesome, thanks for the video!
    Looks like a fun track, would love to see how high you could get the Kwh/mile in a Tesla Sport Roadster.
    Would need to adjust the suspension a bit to help with the understeer but with all the turns the 100% torque from zero should help immensly:)
     
  9. 2k1Toaster

    2k1Toaster Brand New Prius Batteries

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    It disables everything. Don't be using this unless you know what you are doing. :cool:
     
  10. xs650

    xs650 Senior Member

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    Thanks for the info. I wouldn't disable it unless I was doing a track day. I'm already slow enough in my Corvette that I don't need to drive a slower car:D

    It would be a good excuse though:thumb:
     
  11. F8L

    F8L Protecting Habitat & AG Lands

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    I bet it is A LOT faster than mine was... Stock run flat tires and fast shifting after ECU programing made for a rather frustrating day at the track lol. Not to mention your car is just way faster period. :)

    [ame="http://www.youtube.com/watch?v=WWOpQeq9r-E"]YouTube - F8L C5 Spin.wmv[/ame]

    http://www.youtube.com/watch?v=6YU67Y1bYH8
     
  12. xs650

    xs650 Senior Member

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    Don't underestimate my slowness:D
     
  13. stream

    stream Senior Member

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    Very cool--thanks for sharing.

    I agree--the handling and braking of my Prius V is surprisingly good as well (though I've never taken it to a track).
     
  14. sfadchi

    sfadchi Junior Member

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    WOW! Not a bad lap time at all!
     
  15. 2k1Toaster

    2k1Toaster Brand New Prius Batteries

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    I think this probably is the best way to get people to realize that the driver element is more important than the car. When the average Joe sees a Prius whipping around a track they might get a cognitive "does not compute" error forcing them to reevaluate what they thought about anybody in a fast car can go fast.
     
  16. flareak

    flareak Fleet Captain

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    Dang. I need to move to LA and take some of these classes. I really wanna learn on a track, but it's kind of embarrassing going to a class with a Prius :p
     
  17. Chad's Dad

    Chad's Dad Junior Member

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    Thanks for posting that. But why did you let the Vette pass you? :)

    I always thought it would be interesting to try and run a Daytona 500 with a Prius fleet, with no stops for fuel.
     
  18. cossie1600

    cossie1600 Active Member

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    glad I am not the only one that's been on the race track. I do have these things sitting at home, but I think the Prius is retired from competition as the traction control is no fun

    [​IMG]
    Shot at 2010-10-16

     
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