335is DCT? - Page 2 - N54Tech.com

keyap · 08-23-2016, 01:58 PM

Quote:

Upgraded clutch packs

Expensive (for now), but they do exist.

Do they improve this situation given the cause is applied pressure? I read a few threads a while ago where upgraded packs did not stop the slip albeit they were referring to the M DCT.

007335i · 08-23-2016, 02:00 PM

Ok for those who bought the "Is" what packages did you get?

bnk · 08-24-2016, 03:30 AM

What is the torque record for a DCT?

keyap · 08-25-2016, 01:38 PM

Quote:

Ok for those who bought the "Is" what packages did you get?

I currently running 8606074, which is the 'IS' flash, but am having issues with the torque limiter. Others have seen some success with 8606092 which I'm still to try.

8606074 gives me a few more PSI before slip but I'm still needing to run increased BEF load tables to fully alleviate the problem.

Quote:

What is the torque record for a DCT?

At ~25psi I would guess I'm over 700nM although the car runs at 20psi for most of the time.

FL335 · 08-26-2016, 05:26 AM

Quote:

Originally Posted by keyap

I currently running 8606074, which is the 'IS' flash, but am having issues with the torque limiter. Others have seen some success with 8606092 which I'm still to try.

8606074 gives me a few more PSI before slip but I'm still needing to run increased BEF load tables to fully alleviate the problem.

At ~25psi I would guess I'm over 700nM although the car runs at 20psi for most of the time.

I'm running 8606072 (135is) flash with zero slippage at 550wtq (745nm) and that's on stock turbos. I know of other guys on hybrids with bigger #'s that say the tranny stills hold just fine. But realistically a upgraded DCT clutch should be part of the plan if upgrading turbos.

keyap · 08-26-2016, 06:50 AM

Quote:

I'm running 8606072 (135is) flash with zero slippage at 550wtq (745nm) and that's on stock turbos. I know of other guys on hybrids with bigger #'s that say the tranny stills hold just fine. But realistically a upgraded DCT clutch should be part of the plan if upgrading turbos.

What load and level of boost is seen by the DME? Would love to have a look at a log if you have one?

Thanks

FL335 · 08-26-2016, 11:45 AM

Quote:

Originally Posted by keyap

What load and level of boost is seen by the DME? Would love to have a look at a log if you have one?

Thanks

I'll PM you a bit later with a link.

cpwinch · 08-29-2016, 10:01 AM

Quote:

Originally Posted by MFactory

MT has it's place for die-hards, but drive (and appreciate) a DCT for long enough on both street and track, and you will start wondering why you even bothered with a 3rd pedal.

Couldn't agree more. Especially on the racetrack. DCT is a ton of fun. I had a 6mt e90 m3 and I absolutely loved it, but after driving a DCT E92 M3 i realized that they are equally fun and the DCT is much much faster. Once we got our 991 GT3 I fell in love with the PDK in that car. Although it is a ton of fun to have a clutch, its even more fun to put down solid lap times without having to think about changing gears before every turn. For the people who love driving MT, there are thousands of older cars in the world that could satisfy the need for a manual. For instance, I am ordering a F82 M4 next month and it will be DCT. We have a 991 GT3 and it is PDk. In order to make up for the lack of a MT car we want to purchase a 964 carrera or maybe an E36 m3. Manuals are fun and amazing but most modern cars are way better performing in their DCT configuration. If you love the connected feeling of a car and having a MT, then you should consider getting a classic car such as e36, e46, 964, 993, s13, r32 etc...

007335i · 08-31-2016, 02:54 PM

Is there any bog problems with DCT?

bigdnno98 · 09-01-2016, 12:35 PM

Quote:

Originally Posted by 007335i

Is there any bog problems with DCT?

Like what? Shift bog? Only if you lose traction. The DCT cars are very sensitive to tire slip. The DME will aggressively pull boost and timing if there is any tire slip. I have drag radials and turn traction control completely off when I drag race and I have 0 bog issues. If you're talking about on the launch then yes and no. It's all about traction. Mine bogs some when using the 3500 LC and drag radials. That's better than tire spin though.

007335i · 09-01-2016, 12:57 PM

Quote:

Originally Posted by bigdnno98

Like what? Shift bog? Only if you lose traction. The DCT cars are very sensitive to tire slip. The DME will aggressively pull boost and timing if there is any tire slip. I have drag radials and turn traction control completely off when I drag race and I have 0 bog issues. If you're talking about on the launch then yes and no. It's all about traction. Mine bogs some when using the 3500 LC and drag radials. That's better than tire spin though.

Sorry I was referring to shift big. What 1/4 mile times are you running?

FL335 · 09-01-2016, 03:19 PM

Quote:

Originally Posted by 007335i

Sorry I was referring to shift big. What 1/4 mile times are you running?

Just speaking for me and my setup there's no such thing as shift bog. I don't think my car couldn't shift any faster or harder than it does.

As far as 1/4 mile times, I do high 11's on street tires, no meth, no inlets, and no launch control. I roll off the line to a sh*tty best 60 ft of 2.15. If I get that into the AT/MT range of 1.7-1.8 it's an easy mid 11's car. I've since added inlets/outlets and just waiting for it to cool off before I try again.

007335i · 09-01-2016, 04:17 PM

Quote:

Originally Posted by FL335

Just speaking for me and my setup there's no such thing as shift bog. I don't think my car couldn't shift any faster or harder than it does.

As far as 1/4 mile times, I do high 11's on street tires, no meth, no inlets, and no launch control. I roll off the line to a sh*tty best 60 ft of 2.15. If I get that into the AT/MT range of 1.7-1.8 it's an easy mid 11's car. I've since added inlets/outlets and just waiting for it to cool off before I try again.

How do the diffs hold up to luanches? And keep me posted on the 1/4 mile times

bnk · 09-02-2016, 05:23 AM

All DCT diffs are welded so LSD is quite an investment.

MrDangles · 09-02-2016, 06:36 AM

Mfactory post has me confused. Is the DCT trans different than the automatic transmission offered?

_ink · 06:50 AM

Quote:

Originally Posted by keyap

Do they improve this situation given the cause is applied pressure? I read a few threads a while ago where upgraded packs did not stop the slip albeit they were referring to the M DCT.

I'm an N54 DCT, with upgraded Dodson clutch packs - no slip, on ZUB# 8606090

392KW's // +800nm // 25PSI