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    Sep 7, 2008 8:13:39 PM

    Nidge
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    Nidge
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    launch control

    Sorry if its a repost, just seen this video of Porsche Launch control. http://www.youtube.com/watch?v=E9VxIW5lckE

    does anyone know would use of LC invalidate your warranty? I think that it does with other cars

    Sep 7, 2008 8:45:14 PM

    Carlos from SpainM
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    Carlos from Spain
    Loc: Spain. , Spain
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    Reply to: Nidge

    Re: launch control

    Hi Nidge, no it doesn`t, not in this case.

    Sep 7, 2008 10:25:18 PM

    mex99
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    mex99
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    Reply to: Carlos from SpainM

    Re: launch control

    That is my impression too - lc function and clutch etc all covered by warranty. Handbook mentions warning messages if there is an issue and advices not to hold waiting to launch for too long.

    Sep 8, 2008 8:28:25 PM

    devo
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    Reply to: Nidge

    Re: launch control

    I thought that you were limited to a finite number of lauches; 30?

    Sep 8, 2008 8:31:18 PM

    mex99
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    Reply to: devo

    Re: launch control

    Not according to the handbook??

    Sep 9, 2008 1:14:45 AM

    ADias
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    ADias
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    Reply to: mex99

    Re: launch control

    There must be some wear... it would be good to get a straight answer.

    Sep 9, 2008 4:53:06 AM

    Matt C
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    Matt C
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    Reply to: devo

    Re: launch control

    Quote:
    devo said:
    I thought that you were limited to a finite number of lauches; 30?



    I had a testride in one of these cars that are handed from one Porsche Center to the next. The dealer told me that this car had around 100 testrides under his belt. Assuming (confirmed by my dealer) that each testdriver gets a demonstration of the launch control and tries it for himself afterwards, the car had already endured about 200 launches...

    Sep 9, 2008 5:27:28 AM

    reginos
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    Reply to: devo

    Re: launch control

    Quote:
    devo said:
    I thought that you were limited to a finite number of lauches; 30?



    This is not the Porsche style!
    They would either do it properly or not do it at all!

    Sep 9, 2008 6:59:16 AM

    Nidge
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    Nidge
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    Reply to: reginos

    Re: launch control

    But wouldn't we all want to know for sure? As i understand it cars such as Ferrari are also woolly. I dint want to be the one with transmission issues only to discover that i am not covered due to LC use. may have an impact on residuals also. thanks for your views

    Sep 9, 2008 10:56:23 AM

    Tim
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    Tim
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    Reply to: Nidge

    Re: launch control

    I remember reading somewhere that the number of times you can use LC is electronically limited. That being said, it was a ridiculously high number...5000-7000 times!

    Sep 9, 2008 12:14:11 PM

    skazzy
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    skazzy
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    Reply to: Tim

    Re: launch control

    I know that LC is limited on BMW's in the American market. BMW claim that during the LC procedure the transmission and the engine are under immense strain, hence the limitation.

    Sep 9, 2008 8:15:17 PM

    Minok
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    Minok
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    Reply to: skazzy

    Re: launch control

    LC seems like a stupid marketing ploy to begin with.. why have a feature thats going to destroy the car.. either its usable as much as you want or it should not be on the car. That said, why not just use drive and launch the car yourself. I mean, whats the point of the driver if you are buying a car built by someone else, and driving it with software written by someone else. The driver doesn't even need to be in the car at that point. Silly feature, really. Useful to 16 year olds with stupid rich parents, I guess.

    Sep 9, 2008 8:19:54 PM

    Moogle
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    Moogle
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    Reply to: skazzy

    Re: launch control

    Quote:
    skazzy said:
    I know that LC is limited on BMW's in the American market. BMW claim that during the LC procedure the transmission and the engine are under immense strain, hence the limitation.



    It is not limited, nor does it void your warranty.

    In EU markets, it was limited to something like 10-20 launches, after which your warranty was void.

    US law prevents a standard feature (albiet "hidden") on a car to be grounds for voiding ones' warranty. To compensate for this, BMW lowered the RPM (from 5000 to 3000~ IIRC) at which the US car drops the clutch.

    I had a E46 M3 SMG2 and did over 150+++ launches, never a problem. Not only was my drivetrain fine, but the dealer never said anything about it, even though they could see it every time they plugged in my key.

    Sep 9, 2008 11:28:27 PM

    Nilesh
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    Nilesh
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    Reply to: Moogle

    Re: launch control

    am visiting my dealer tomorrow, will be sure to ask him the official stance here in the UK

    Sep 10, 2008 4:16:56 AM

    Grant
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    Grant
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    Reply to: Nilesh

    Re: launch control

    Quote:
    Nilesh said:
    am visiting my dealer tomorrow, will be sure to ask him the official stance here in the UK


    While you're at the dealer, could you please inquire as to whether the number of "launches" is recorded on the onboard computer?

    Even if the warranty is not affected by frequent use of LC (I don't think it is), it may be difficult to sell one with lots of launches if this info is easily accessed by a prospective buyer (like reading number of over-revs).

    Sep 10, 2008 6:41:14 AM

    Moogle
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    Moogle
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    Reply to: Grant

    Re: launch control

    I think something like LC would definitely be recorded.

    Sep 10, 2008 10:01:48 AM

    EricAlain
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    EricAlain
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    Reply to: Moogle

    Re: launch control

    It would definitely make sense to record it.

    LC is putting a lot of "stress" on the car.

    Sep 10, 2008 5:18:51 PM

    ADias
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    ADias
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    Reply to: EricAlain

    Re: launch control

    Quote:
    EricAlain said:
    It would definitely make sense to record it.

    LC is putting a lot of "stress" on the car.



    Yes. This is what car mags do to measure their 0-60MPH times.

    This is the sort of feature PAG should allow owners to turn off. In fact, PAG should allow much more electronic configuration than it presently does. Things like configuring Sport Mode settings.

    Sep 10, 2008 8:47:50 PM

    Minok
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    Minok
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    Reply to: Grant

    Re: launch control

    Quote:
    Grant said:
    it may be difficult to sell one with lots of launches if this info is easily accessed by a prospective buyer (like reading number of over-revs).




    Ok, newbie question... whats an over-rev? I thought there is rev-limiter action going on, which by definition, would prevent over-rev. How is an over-rev defined?

    Sep 10, 2008 10:12:43 PM

    Carlos from SpainM
    Rennteam Moderator
    Carlos from Spain
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    Reply to: Minok

    Re: launch control

    Over revs are clasified by the actual rev's above the limit achieved (Type I, Type II, ect) and are so recorded.

    Even though the rev limiter can avoid serious over revs caused by the throttle, it cannot do anything against overreving the engine due to a mis shift, like engaging 2nd instead of 4th gear. It that case revs can climb as high as 13000RPM and serious engine damage can occur.

    Sep 11, 2008 12:05:16 AM

    Minok
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    Minok
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    Reply to: Carlos from SpainM

    Re: launch control

    Ok that makes sense. I would have thought that the transmissions would have mechanisms in place to prevent such shift issues.

    My transmission (in my VW Golf) prevents me from shifting into 1st gear unless I'm moving very, very slowly. Why can that sort of technology not be applied to the other gears as well in a manual gearbox?

    Sep 11, 2008 1:14:33 AM

    Grant
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    Reply to: Minok

    Re: launch control

    Quote:
    Minok said:
    Ok that makes sense. I would have thought that the transmissions would have mechanisms in place to prevent such shift issues.

    My transmission (in my VW Golf) prevents me from shifting into 1st gear unless I'm moving very, very slowly. Why can that sort of technology not be applied to the other gears as well in a manual gearbox?


    AFAIK, your Golf does not have any technology to prevent you from selecting 1st gear at speed. That is simply the synchronizers objecting, based on the mechanical demands placed on them. If you were to double-clutch (rev-match to around 4,000rpm with the clutch out and then press the clutch again when shifting) at 20mph, you could easily select 1st gear.

    Sep 11, 2008 6:34:46 PM

    Minok
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    Minok
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    Reply to: Grant

    Re: launch control

    True, but the syncronizers objecting does the job for me... granted, it would not help in a race situation, but on normal road driving... its some protection.
     
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