Need some tips on how to get my car off the line faster ! - Page 3 - BMW M5 Forum and M6 Forums
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post #21 of 24 Old 14th June 2018, 11:54 PM
Truenorth
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I’ve had both smg tunes as most of you, it seems the USA spec 1800rpm is too little and I find the 4000+ Euro tune just roasts the tires. Competing against a modified e60 M5 euro smg tune at the drag races he used launch control every time and I pedaled the throttle on red9 on my sprint booster and beat him every time. Ideally a 3000rmp launch would work best perhaps...if only
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post #22 of 24 Old 15th June 2018, 02:46 AM
jcolley
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Euro LC has variable Launch RPM using the cruise stalk IIRC (i haven't launched an M5 in 3 years...or driven my own for that matter). What are the available settings?
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post #23 of 24 Old 17th June 2018, 03:53 AM Thread Starter
Waitingondapig
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Originally Posted by Emfiver View Post
I have euro spec car and launch control is one way so a tune with euro lc is one answer. It gets a lot of wheel spin but still gets a good launch.

The other way is as follows:

Put it in m mode set to:
Dsc off (or try m dynamic if you like)
P500sport
S6

On the line when it's go time give the accelerator a quick stab, then really punch it to the floor as hard/fast as you can.

The first stab will bring the revs up a little and the second mash will really get it launching. Get ready to modulate the throttle in first (if you don't you'll just end up in an epic burnout till you hit the rev limiter), so modulate the throttle a little to tame the wheel spin, grab second when the wheelspin settles down and revs get up over 7,000. After second it's just hang on and shift between 7500-8000.

It works nicely for me. 🙂
Thanks for the tips ! ...sounds like I need to practice quite a bit more, but does sound like it may be doable at least. I may need to go to a private road and try it over and over till I get this nailed down.

2007 e63 M6 - All black
2008 e64 650i - All black
1998 e38 740il - All black

Seems I like black cars !
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post #24 of 24 Old 17th June 2018, 05:44 AM
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Yeah a little practice will help. I probably wouldn't do heaps in a row as it definitely puts heat through the clutch if you do a bunch of hard launches.

Jciolley: yes from memory each press on the cruise control 'minus' button takes lc down 250 or 500 rpm. Can't remember which. Only works with euro lc though I think.

I can see how a sprint booster would help with launching the car. With the stock throttle mapping you really have to stab/kick/punch the accelerator. A normal 'just push it fairly quickly to the floor' like most other cars won't get you a hard launch at all as the car starts moving with small throttle opening and by the time they crack wide open the car is rolling and bogged down at low rpm. The spring booster might save you from having to feel like you're trying to kick the pedal through the firewall....
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