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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 > N55 DCT 100-200km/hr



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      06-10-2012, 11:01 PM   #1
rKi
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N55 DCT 100-200km/hr

In Taiwan, we get the Euro spec n55 DCT on our 335s as standard option.

Is there a big advantage considering the shift speed, transmission loss and weight?

I currently have iCarbon DP and JB4 stage2 installed, how would I go against a tuned N54 with DP?

Thanks in advance
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      06-12-2012, 08:49 AM   #2
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DCT shifts faster, but during 100-200 run, it actually takes 2 shifts instead of 1 to accomplish.
I ran 10.2(P-box) on PSS tire. With everything equal, a modded N54 out-run a modded N55 on 100-200 run.
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      06-12-2012, 09:07 AM   #3
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Quote:
Originally Posted by VantageV8 View Post
DCT shifts faster, but during 100-200 run, it actually takes 2 shifts instead of 1 to accomplish.
I ran 10.2(P-box) on PSS tire. With everything equal, a modded N54 out-run a modded N55 on 100-200 run.
Thanks for the input! I'm not sure if I did it correctly, with DTC off, DP installed, sports mode button pushed without tune I got 13.6.

I will be testing it out sometimes soon when I replace my tyres, I'm also using PSS 18" but with 265 wide tyres.
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      06-14-2012, 08:53 AM   #4
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13.6 sec without a tune sounds about right.
turning DTC off has no effect what-so-ever
PSS is so over-rated, I would take P zero RFT over it any day
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      06-14-2012, 11:03 PM   #5
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Quote:
Originally Posted by VantageV8 View Post
13.6 sec without a tune sounds about right.
turning DTC off has no effect what-so-ever
PSS is so over-rated, I would take P zero RFT over it any day
Thanks dude, 10.2 sec 100-200km/hr is completely beyond my expectations. I thought I would probably get 12 ish!

How wide is your tire size? 255, 265? I got the m-sport 18" running on 265 wide tires. Thinking about changing it to 255.

At what RPM did did you shift? I always shift at 6200~ with the DP.

Taiwan has been raining alot recently, once the road is dry I will try it out with my p-box
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