May be buying DCT

bigdnno98 · 07-14-2012, 01:42 PM

So how much tq can the DCT handle? I'm thinking about getting a 135i with DCT. Of course I plan to go FBO with meth immediately and drag race regularly. I just finished reading up on the DCT but haven't heard of one failing yet. I was reading a little about upgraded clutch packs. Are these readily available and how much are they?

Thanks in advance for your help.

boostd92 · 07-14-2012, 02:19 PM

No one has successfully run upgraded clutch packs, AFAIK, and if you are a drag racer, you might want a steptronic car instead. The launch control on the DCTs hasn't produced any good 60 foot times and from the reviews posted on here, is kind of a pain (on the dragstrip).

bigdnno98 · 07-14-2012, 02:26 PM

That's kind of what I was wondering, would I just be better off with a 6AT. In that case I'll prob just look for another n54. Thanks for the input.

boostd92 · 07-14-2012, 03:40 PM

Don't discount the majority of owners who absolutely LOVE the DCT on a daily driver basis, or even mild road course use. When it comes down to it, how often are you at the strip? 1% of the time you're using the car?

A 4th gen Camaro (LS1) is the best bang for the buck in terms of modern dragstrip queen cars, IMO, if that's what you're into.

bigdnno98 · 07-14-2012, 03:45 PM

Nah, I hate American cars. I usually go to the drag strip twice a month. I love my 335i. I just can't get the times that the 6AT guys get with my 6MT. I'll prob pick up a 2010 6AT so I can keep my n54.

Charleston335 · 07-16-2012, 08:19 AM

I LOOVE mine!!

benzy89 · 07-16-2012, 08:39 AM

DCT will give you the best drag times (shifts faster, better gearing), but FBO + meth you'll be exceeding the TQ limits (it's 420 ft lbs).

SSP sells 600 + 700 WHP clutch upgrades, there's full threads documenting the DCT upgrade on the M3 forums after all the DCT owners with superchargers started to feel their clutches slipping

bigdnno98 · 07-16-2012, 03:11 PM

yeah was just reading that the clutch disk upgrade up to 600 hp is around $1700 + around $600 labor from my local shop. $2300 isn't too bad I guess, just not sure that it will make a N55 DCT faster than my N54 6MT. (I suck at drag racing the 6MT which is why I'm looking at DCT or 6 AT)

BMW_Belgier · 07-16-2012, 03:14 PM

DCT is faster as manual!

If you could eleminate the torque frontier of the standard clutch, it is your best choice

07-14-2012, 01:42 PM	#1
bigdnno98 Real Car Enthusiast 288 Rep 2,082 Posts Drives: 340xi Join Date: Jul 2011 Location: Germany iTrader: (8)	May be buying DCT So how much tq can the DCT handle? I'm thinking about getting a 135i with DCT. Of course I plan to go FBO with meth immediately and drag race regularly. I just finished reading up on the DCT but haven't heard of one failing yet. I was reading a little about upgraded clutch packs. Are these readily available and how much are they? Thanks in advance for your help.
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07-14-2012, 02:19 PM	#2
boostd92 Captain 62 Rep 759 Posts Drives: '11 E92 M-Sport Join Date: Jun 2009 Location: Chicago, IL iTrader: (1) Garage List 2011 BMW 335i M-Spo ... [7.26]	No one has successfully run upgraded clutch packs, AFAIK, and if you are a drag racer, you might want a steptronic car instead. The launch control on the DCTs hasn't produced any good 60 foot times and from the reviews posted on here, is kind of a pain (on the dragstrip).
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07-14-2012, 02:26 PM	#3
bigdnno98 Real Car Enthusiast 288 Rep 2,082 Posts Drives: 340xi Join Date: Jul 2011 Location: Germany iTrader: (8)	That's kind of what I was wondering, would I just be better off with a 6AT. In that case I'll prob just look for another n54. Thanks for the input.
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07-14-2012, 03:40 PM	#4
boostd92 Captain 62 Rep 759 Posts Drives: '11 E92 M-Sport Join Date: Jun 2009 Location: Chicago, IL iTrader: (1) Garage List 2011 BMW 335i M-Spo ... [7.26]	Don't discount the majority of owners who absolutely LOVE the DCT on a daily driver basis, or even mild road course use. When it comes down to it, how often are you at the strip? 1% of the time you're using the car? A 4th gen Camaro (LS1) is the best bang for the buck in terms of modern dragstrip queen cars, IMO, if that's what you're into.
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07-14-2012, 03:45 PM	#5
bigdnno98 Real Car Enthusiast 288 Rep 2,082 Posts Drives: 340xi Join Date: Jul 2011 Location: Germany iTrader: (8)	Nah, I hate American cars. I usually go to the drag strip twice a month. I love my 335i. I just can't get the times that the 6AT guys get with my 6MT. I'll prob pick up a 2010 6AT so I can keep my n54.
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07-16-2012, 08:19 AM	#6
Charleston335 First Lieutenant 15 Rep 342 Posts Drives: 2012 Msport 135i convertible Join Date: Jul 2010 Location: Charleston, SC iTrader: (1)	I LOOVE mine!!
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07-16-2012, 08:39 AM	#7
benzy89 Banned 79 Rep 2,396 Posts Drives: '08 E90 335i Join Date: Jan 2012 Location: Northern NJ iTrader: (3) Garage List 2008 BMW 335i [7.50]	DCT will give you the best drag times (shifts faster, better gearing), but FBO + meth you'll be exceeding the TQ limits (it's 420 ft lbs). SSP sells 600 + 700 WHP clutch upgrades, there's full threads documenting the DCT upgrade on the M3 forums after all the DCT owners with superchargers started to feel their clutches slipping
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07-16-2012, 03:11 PM	#8
bigdnno98 Real Car Enthusiast 288 Rep 2,082 Posts Drives: 340xi Join Date: Jul 2011 Location: Germany iTrader: (8)	yeah was just reading that the clutch disk upgrade up to 600 hp is around $1700 + around $600 labor from my local shop. $2300 isn't too bad I guess, just not sure that it will make a N55 DCT faster than my N54 6MT. (I suck at drag racing the 6MT which is why I'm looking at DCT or 6 AT)
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07-16-2012, 03:14 PM	#9
BMW_Belgier Lieutenant Colonel 99 Rep 1,597 Posts Drives: E92 335xi n55 Join Date: May 2012 Location: Switzerland iTrader: (0)	DCT is faster as manual! If you could eleminate the torque frontier of the standard clutch, it is your best choice
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