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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > Some fun with the N55 DCT and Launch Control



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      05-27-2010, 03:56 AM   #1
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Some fun with the N55 DCT and Launch Control

Just wanted to share with you guys this cool video of the new n55 with DCT partially turned off. Note how fast the DCT shifts.

Mike

.
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      05-27-2010, 04:10 AM   #2
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      05-27-2010, 04:32 AM   #3
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does jb3 work on N55 engine now?
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      05-27-2010, 04:48 AM   #4
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funny one....
say hello to the above turkey bro
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      05-27-2010, 04:59 AM   #5
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Waiting for a piggyback system, or a flash
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      05-27-2010, 09:35 AM   #6
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Looks cool, but really any stock N54 will smoke that off the line.. That was alot of wheel spin, took a while to get to 40. I hear without LC it bogs off the line?
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      05-27-2010, 10:40 AM   #7
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Quote:
Originally Posted by 1LUMI335 View Post
Looks cool, but really any stock N54 will smoke that off the line.. That was alot of wheel spin, took a while to get to 40. I hear without LC it bogs off the line?
I agree but that 2nd to 3rd gear shift was lightning quick.
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      05-27-2010, 10:51 AM   #8
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It had a lot of wheel spin, but then again, nobody on n54 street tires launches at near 4000 RPM! LOL

(well I dont anyway).

Usually 2000 RPM at most.
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      05-27-2010, 11:27 AM   #9
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my god that thing shifts fast.
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      05-28-2010, 01:34 AM   #10
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Looks real sick.
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      05-29-2010, 08:41 AM   #11
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Wow, lots of wheel spin but also crazy fast shifts
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      05-30-2010, 02:13 AM   #12
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maybe im intoxicated but thats a ton of wheel spin for launch control..
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      05-30-2010, 03:25 AM   #13
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Quote:
Originally Posted by themyst View Post
my god that thing shifts fast.
+1

Exactly my thoughts!

Mike
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      05-30-2010, 06:49 AM   #14
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any idea of how harmful this is to the transmission? i mean like on the GTR, you did it 4 or 5 times and your tranny is gone.
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      05-30-2010, 06:57 AM   #15
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Awesome, love the DTC technology!
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      05-30-2010, 11:46 AM   #16
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Makes me cringe!! I ripped a m3 diff out launching at 4k, now I'm forever scared to do it
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      05-30-2010, 12:46 PM   #17
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Quote:
Originally Posted by BuLoOoSki View Post
any idea of how harmful this is to the transmission? i mean like on the GTR, you did it 4 or 5 times and your tranny is gone.
With the GTR being all wheel drive I'm not surprised.
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      05-30-2010, 05:39 PM   #18
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Quote:
Originally Posted by Dr_Dirt View Post
With the GTR being all wheel drive I'm not surprised.
yeah it makes sense, my friend who has a GTR said that a lot of people had this happen and now Nissan stopped repairing them under warranty and claims that the launch control is only to be used for emergency purposes loool. So now all the newer cars come without a launch control option. I'm not a 100% sure of that but that's what he claims!
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      05-31-2010, 01:17 PM   #19
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Quote:
Originally Posted by BuLoOoSki View Post
Nissan stopped repairing them under warranty and claims that the launch control is only to be used for emergency purposes loool. So now all the newer cars come without a launch control option. I'm not a 100% sure of that but that's what he claims!
I'd like to see that hold up in court!
As for the new cars, they still have launch control it's just been dialed down a bit. Don't remember the numbers, but used to launch at 4xxxish and now launches at 2xxxish for the drop.
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      05-31-2010, 02:20 PM   #20
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Quote:
Originally Posted by Mike@N54Tuning.com View Post
Just wanted to share with you guys this cool video of the new n55 with DCT partially turned off. Note how fast the DCT shifts.

Mike
Thanks for sharing! DCT looks cool.

Quote:
Originally Posted by JPSlick View Post
It had a lot of wheel spin, but then again, nobody on n54 street tires launches at near 4000 RPM! LOL

(well I dont anyway).

Usually 2000 RPM at most.
I do.

Quote:
Originally Posted by dmurray14 View Post
Makes me cringe!! I ripped a m3 diff out launching at 4k, now I'm forever scared to do it
Thanks for the heads up. Was it due to wheel hop?

Quote:
Originally Posted by Dr_Dirt View Post
With the GTR being all wheel drive I'm not surprised.
I'm AWD too.

In this vid I launch my XI at 3500+ on stock run flats, no weight reduction. Race weight is ~4100lbs. I got a 1.781 60ft. time.

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      05-31-2010, 04:37 PM   #21
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Quote:
Originally Posted by iwanna335 View Post
I'd like to see that hold up in court!
As for the new cars, they still have launch control it's just been dialed down a bit. Don't remember the numbers, but used to launch at 4xxxish and now launches at 2xxxish for the drop.
yeah he said that they're going to do something about it and he said at that time (and I'm talking maybe 1.5-2yrs ago) i guess they decided to dial it down instead of removing it completely
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