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Thread: Skoda Octavia vRS TDI CR + OBD II bluetooth scanner + Galaxy Tab + Torque Pro

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  1. #1
    Join Date
    May 2008
    Location
    Erskineville, NSW
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    7,595
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    Quote Originally Posted by Mysticality View Post
    The idea behind the idling can be easiest explained by reading up the phenomena behind the 'turbo timer.'
    See: Turbo timer - Wikipedia, the free encyclopedia

    Basically... You sit there and let it idle instead.
    Also - Diesels use less fuel at idle.
    Actually, they use less fuel when turned off Idling for more than about 30s uses more fuel than switching off/on. 60s is the break-even point if you take into account battery & starter motor wear.

    Unless you've been thrashing the engine beforehand, it is not necessary to idle-down the turbo. The Skodas are fitted with a post-shutdown water pump that circulates water through the cooling circuit of the turbo & a similar pump for the oil supply. So unless you've been doing hotlaps of the local area, idle-down is redundant. Turbo-Timers are very 1990s.

    Prolonged idling in any turbo-diesel is also an outdated idea. All it does is use fuel, pollute the air & wear out the engine. It causes a thing called diesel plugging which is a build-up of carbon around the rings & other components & also wetstacking (buildup of liquid soot in the exhaust circuit).

    Basically, a diesel is designed to operate under load. Idle doesn't load them enough. If you need to sit for prolonged periods then you need to bring the RPM up to 1200 to load the rings, increase EGTs, increase fuel burn efficiency & reduce water vapour.

    My info is based on what my engine vendors (Detroit Diesel/MTU) were telling me when I was buying stationary engines off them between 2002-2007. We were having issues with the operators wanting to idle the engines for excessive periods (causing plugging & wetstacking) & the vendors wanted to put in an idle routine in the ECU that would punt the engines to 1200 if they idled for more than 5 minutes.

    Sorry for the lecture but there are a lot of outdated practices out there in diesel-land.
    carandimage The place where Off-Topic is On-Topic
    I used to think I was anal-retentive until I started getting involved in car forums

  2. #2
    Join Date
    Jan 2012
    Location
    Sydney, NSW
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    1,371
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    turbo timers are useless IMO

    if you dont thrash your car all the way to your parking spot, why idle it down? the turbo is water cooled and oil lubricated. it doesnt need to be 'cooled down'

  3. #3
    Join Date
    Dec 2011
    Location
    Bowral, NSW
    Posts
    1,706
    Users Country Flag Thread Starter
    Here are some pics of how I've run the wiring.



    [img[http://a3.sphotos.ak.fbcdn.net/hphotos-ak-ash3/s720x720/537735_10150888585548117_785693116_9837674_6265342 49_n.jpg[/img]









    Strongly considering getting the dealership to wire up a couple of aux. power points to a bracket that sits next to the cubby hole on the drivers side, next to the door.
    Means I can run the tablet AND charge the phone at the same time.
    Or the mate's phone, that I swear never sees a charger, except when its in my car.
    2012 Octavia vRS TDI. Darkside big turbo, 3bar tune, other stuff. 200kW/650Nm.
    1990 Mk1 Cabrio. 1.9 IDI w/ 18PSI.
    1985 Mazda T3500 adventuremobile. 1973 Superbug. 1972 Volvo 144 in poo-brown.
    Not including hers...

  4. #4
    Join Date
    Jul 2010
    Location
    Canberra, ACT
    Posts
    2,260
    Users Country Flag
    do u have a pic of the obd II bluetooth unit?

    i take its possible to leave it "connected" while driving around?
    MY17 Superb 162TSI, Business Grey, Tech+Comfort Pack, APR ECU+TCU Stg 1, SLA, Rieger Splitter + Side Skirts, Eibach Pro-Kit Springs, Hardrace Swaybar, TPMS

  5. #5
    Join Date
    Dec 2011
    Location
    Bowral, NSW
    Posts
    1,706
    Users Country Flag Thread Starter
    I do not, but here's one I found online.
    Exactly what I have.

    Its plugged in, and left there.
    Only take it out to try it in other cars, and when sent to the dealership.
    2012 Octavia vRS TDI. Darkside big turbo, 3bar tune, other stuff. 200kW/650Nm.
    1990 Mk1 Cabrio. 1.9 IDI w/ 18PSI.
    1985 Mazda T3500 adventuremobile. 1973 Superbug. 1972 Volvo 144 in poo-brown.
    Not including hers...

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