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Launch control

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step_change
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Launch control

Post by step_change » Sun Apr 29, 2018 10:41 am

[/quote]
As they say “holy s**t”...

Gone are the good days of racing the TGV to the south then...-;)
[/quote]
Yes, well and truly gone. I think the French Police are even more draconian now.
Gone :( : 2013 35is, Melbourne Red, DCT, Nav, Comfort pack
Gone: 2007 2.5is, Montego Blue, Auto, Nav

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Diego_F
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Launch control

Post by Diego_F » Thu May 17, 2018 6:36 am

alvaro0000 wrote: Fri Apr 27, 2018 3:35 pm Hi folks,

I haven't ever been able to use the launch control since I bought my car Z4 (e89) branch new 3 years ago. This is what I do:

1) drive for a while to warm-up. The manual says at least 6 miles but I have tried much more than that. The temperature is at 110 degrees, sometimes 120.

2) put the car is sport+ mode and manual first gear (M1 in the display).

3) push brakes and accelerate.

In theory in step 3 I should see a flag in the main display. But the engine actually tries to accelerates the car forward and the brakes make a painful sound because they are in being pushed by the engine! No flag on the screen. So I guess this is not expected at all.

I have taken the car to the dealer as it should be covered by the warranty, but they said they couldn't test it because it requires "race conditions" and they cannot do it in the public road (bullshit). They watched the logs dumped by the computer and they said everything seemed ok.

Any thoughts?

Thanks,
Did you press throttle until the point of a kick-down? That’s the point.
2012 E89 sDrive35is Black Sapphire

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Nick9one1
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Launch control

Post by Nick9one1 » Tue May 22, 2018 3:45 pm

I've done this a few times in my 35i DCT.

Sport+ & gearstick in sport (never tried in manual)
Left foot on brake
press throttle down hard (activate the kickdown switch)
The revs should rise to 4000, and you get a chequered flag in the instrument cluster.
Let go of brake...

The first few times I tried i couldn't get it to work - It probably wasn't up to temp.
Z4 35i Space Gray, Red Leather
Stepped Intercooler
De-Cat Downpipes
HKS SSQV
MHD 98RON Stage 2+
395 BHP :driving:

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