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Old 02-09-2016, 03:54 PM   #1
BravoMyles
 
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Was told to leave nannies on and just mash it..

So as far as I know, to avoid bogging power in an L99 you need to turn the nannies off, and a proper launch and setup will be the best results.

That being said, I was told by a shop to leave nannies on and just put it to the floor in drive (not sport), and that that resulted in his best times to date in his car.

I've searched around trying to find an answer and have come up empty handed. I've seen people launching from 1500 RPM, from idle, with and without nannies, etc..

Can anyone clarify any of this for me? I'm on stock tires with light bolt ons, but launching with nannies bogs it down a TON even with just that, although when it finally hooks and opens up it screams ahead.

Do I just need to get used to rolling on power slower without nannies? Do I need to launch from idle or run it up? I'm at a total loss right now.
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Old 02-09-2016, 09:26 PM   #2
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Try it with your T/C off run your RPM up on launch and drop rear tires to 25 psi.
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Old 02-09-2016, 10:45 PM   #3
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T/C and Stabilitrack or just T/C? And about what RPM would you say? At around 30psi I start breaking the tires loose at as low as 1500 RPM.
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Old 02-09-2016, 10:49 PM   #4
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As said above, then start at 1000rpm and work up in 100's. My best at that stage was all nannies off, tire pressure 25lbs and launching at 1200rpm.
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Old 02-09-2016, 10:52 PM   #5
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For me: Nannies OFF, 1,000 RPM, Tires at 25 PSI, shifter in S. Let the tranny shift itself. Leave as hard as you can WITHOUT spinning.

Oh and do the ECM fuse pull!
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Old 02-10-2016, 12:10 AM   #6
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Thanks! I'll play around with it a bit and see. I knew leaving the nannies on seemed a bit odd, totally kills the car off the line when you just mash it down.
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