dctnot handling tune especially between shifts

8600RPM · 03-14-2015, 09:34 AM

I run ess tune and after trying all of their 3 tunes on the box I settled on linear tune. part of the reason I noticed with more boost than the 21 to 22 , full throttle shifts are met with a big disruption in a shift at at 2 to 3 or even 3 to 4. This may be engine not happy?

The other thing I don't like is in d3 mode going on freeway at 70 let's say snd you stomp the pedal, normally and with linear tune , the dct will instantly drop to 3rd and rocket off. However with all power increase if I try that, it seems dct slips snd won't bite right away?

It seems 480 to 500 whp and dct isn't happy but if it's same unit as f10 why is that?

TahoeM3 · 03-14-2015, 09:36 AM

Are you sure it's not the tires spinning?

RingMeister01 · 03-14-2015, 10:02 AM

Well you're running way more boost than your ECU and DCT are thinking they are. Hence DCT isn't applying enough force to capture the discs.

Just a thought.

//Maniac · 03-14-2015, 10:10 AM

Do you have downpipes? if not that may be a good reason. too much boost getting choked out.

dmk08 · 03-14-2015, 10:20 AM

Stock US MDM? May just be the nannies kicking in imo. Until I turned on Euro MDM it was like 0 spin in my car. Plenty are running the dct at a much higher power # and a piggy.

Vectors2final · 03-14-2015, 10:22 AM

I've heard doing a factory reset/adaption will help, if it is in fact the DCT.

Not sure what all is involved in that.

It's all in the settings... The only thing what would help this is to get a DCT tune to increase clamping pressure... Which hasn't been done yet.

335iFFM · 03-14-2015, 10:23 AM

It's not the DCT. At least if you didn't use LC. LC destroys the clutch pack.

When DCT slips RPM skyrocket and the car won't accelerate.

Bowser330 · 03-14-2015, 10:26 AM

I don't believe it is the same unit as the f10 m5 also Terry is currently getting the Dodson clutch upgrade, if you'd be at all interested....

Vectors2final · 03-14-2015, 10:29 AM

Quote:

Originally Posted by Bowser330

I don't believe it is the same unit as the f10 m5 also Terry is currently getting the Dodson clutch upgrade, if you'd be at all interested....

From what I've heard, they have the same part number.

Terry just doesn't want to wait because Gintani is being flakey after they said they'd flash it, and never responded, then said they were working on it, only to flake out again... I guess that's not the first time they've done this.

RingMeister01 · 03-14-2015, 10:31 AM

Quote:

Originally Posted by dmk08

Stock US MDM? May just be the nannies kicking in imo. Until I turned on Euro MDM it was like 0 spin in my car. Plenty are running the dct at a much higher power # and a piggy.

Where'd you get the euro MDM?!

Sorry OP

RingMeister01 · 03-14-2015, 10:34 AM

Quote:

Originally Posted by Bowser330

I don't believe it is the same unit as the f10 m5 also Terry is currently getting the Dodson clutch upgrade, if you'd be at all interested....

It's the exact same unit

MasterC17 · 03-14-2015, 10:35 AM

Is this happening with DSC off? If you have DSC on, or MDM on, that's what is going own. If DSC is off, I know what you're talking about, and yes it is the clutch slipping. Just wait, the more boost you run the worse it gets

Just incase others are not aware, even on lower boost settings (e.g. MAP 2) the DCT clutch will slip for a split-second until it catches.

8600RPM · 03-14-2015, 10:39 AM

I guess I'll need to do more trials with traction off, mdm on vs off etc as I can't be certain now which settings I've had on which tune.

I know for me the sweet spot from a former e92 v8 guy is the ess linear tune adding 3 to 4 psi boost in a progressive fashion that pulls in a more linear fashion to redline as it keeps power at 460whp from 5400 to 7400. no lag, shifts hard but smooth and it's a lot of fun.

Sometimes people get caught up in max power dyno but more boost seems to add lag, less ability to put power down and less linear feeling.

However I'm still frankly interested in answering my own dct question so I'll play this weekend on trying scenarios

8600RPM · 03-14-2015, 11:00 AM

Clearly this isn't the same unit as m5 u think its safe to say

8600RPM · 03-14-2015, 11:01 AM

Then again the inertia change given the 1000 pounds of less weight is much faster and perhaps adds stress to clutch when we get up to 475whp and above

335iFFM · 03-14-2015, 11:03 AM

Quote:

Originally Posted by RingMeister01

It's the exact same unit

No, it's not. Clutchpack is different and weighs less. Also has the rpm-limit 100rpm higher than the F10 DCT

dmk08 · 03-14-2015, 11:03 AM

Quote:

Originally Posted by 8600RPM

I guess I'll need to do more trials with traction off, mdm on vs off etc as I can't be certain now which settings I've had on which tune.

I know for me the sweet spot from a former e92 v8 guy is the ess linear tune adding 3 to 4 psi boost in a progressive fashion that pulls in a more linear fashion to redline as it keeps power at 460whp from 5400 to 7400. no lag, shifts hard but smooth and it's a lot of fun.

Sometimes people get caught up in max power dyno but more boost seems to add lag, less ability to put power down and less linear feeling.

However I'm still frankly interested in answering my own dct question so I'll play this weekend on trying scenarios

I like the turbo kick and the less linear feeling. You can put the power down just roll into it. The linear tune is surely slower but easier to drive.

8600RPM · 03-14-2015, 11:18 AM

I like a turbo kick buy if it can't put power down or you need to roll into it more, you are effectively creating a more linear delivery with your foot. I like as much kick as possible with dct biting hard, no disruption at full throttle shifts and not having to overly feather the throttle

Vectors2final · 03-14-2015, 11:32 AM

Quote:

Originally Posted by 8600RPM

Then again the inertia change given the 1000 pounds of less weight is much faster and perhaps adds stress to clutch when we get up to 475whp and above

This where the tune for trans would help to increase clamping pressure.

Terry is trying to get that done to see if it works out on the pure care.

8600RPM · 03-14-2015, 11:43 AM

Yes that woukd be big help as power potential increases

Bowser330 · 03-14-2015, 02:24 PM

Quote:

Originally Posted by 335iFFM

Quote:

Originally Posted by RingMeister01

It's the exact same unit

No, it's not. Clutchpack is different and weighs less. Also has the rpm-limit 100rpm higher than the F10 DCT

+1 I've yet to hear of any m5 dcts slipping with 550wtq (any basic pump gas tune)

Hopefully Terry's Dodson upgrade will work out...however it's a pricey upgrade $1,500 labor + $1871usd (2550nzd) for 800ftlb clutches

Hobbination · 03-14-2015, 04:29 PM

Same rear end and final drive ratio as M5 tho. That's confirmed. Not 100% on the DCT. They share some parts I'm sure.

03-14-2015, 09:34 AM	#1
8600RPM Lieutenant Colonel 657 Rep 1,749 Posts Drives: e92 m3 Join Date: Oct 2014 Location: AZ iTrader: (0)	dctnot handling tune especially between shifts I run ess tune and after trying all of their 3 tunes on the box I settled on linear tune. part of the reason I noticed with more boost than the 21 to 22 , full throttle shifts are met with a big disruption in a shift at at 2 to 3 or even 3 to 4. This may be engine not happy? The other thing I don't like is in d3 mode going on freeway at 70 let's say snd you stomp the pedal, normally and with linear tune , the dct will instantly drop to 3rd and rocket off. However with all power increase if I try that, it seems dct slips snd won't bite right away? It seems 480 to 500 whp and dct isn't happy but if it's same unit as f10 why is that?
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03-14-2015, 09:36 AM	#2
TahoeM3 Major 410 Rep 1,025 Posts Drives: F-type R, GTR, X5 50i Join Date: Apr 2006 Location: Tampa, Fl iTrader: (0)	Are you sure it's not the tires spinning?
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03-14-2015, 10:02 AM	#3
RingMeister01 Croatian 884 Rep 3,613 Posts Drives: PORSCHE Join Date: Dec 2012 Location: NYC iTrader: (0) Garage List '18 Panamera Turbo [0.00] '17 991.2 Carrera G ... [0.00]	Well you're running way more boost than your ECU and DCT are thinking they are. Hence DCT isn't applying enough force to capture the discs. Just a thought. __________________ NARDO GREY '18 PANAMERA TURBO Ducati V4 S Corse (track only) Husqvarna FS450 (track only) Looking for an SUV
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03-14-2015, 10:10 AM	#4
//Maniac Enzo Tuned ECU 152 Rep 179 Posts Drives: Silverstone F80 6MT Join Date: Dec 2014 Location: Long Island NY iTrader: (0)	Do you have downpipes? if not that may be a good reason. too much boost getting choked out.
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03-14-2015, 10:20 AM	#5
dmk08 Gone Fishin’ 7318 Rep 12,125 Posts Drives: Walks Join Date: Jul 2012 Location: Atlanta iTrader: (19)	Stock US MDM? May just be the nannies kicking in imo. Until I turned on Euro MDM it was like 0 spin in my car. Plenty are running the dct at a much higher power # and a piggy.
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03-14-2015, 10:22 AM	#6
Vectors2final Brigadier General 1357 Rep 3,349 Posts Drives: 2018 F80 YMB/SS ZCP Join Date: May 2011 Location: Austin, Tx iTrader: (0)	I've heard doing a factory reset/adaption will help, if it is in fact the DCT. Not sure what all is involved in that. It's all in the settings... The only thing what would help this is to get a DCT tune to increase clamping pressure... Which hasn't been done yet. __________________ 2019 Ruby GT350 - Gen 5 Whipple on corn making 855RWHP. Sold: 2018 F80 Part Deux /DCT /YMB /Full SS /CF Trim /ZCP /ZEC w/Black 666M Sold: 2015 F80 /DCT /YMB /Full SS /CF Trim /ZEC /ZLP /HK /S&TVC- 18''///M
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03-14-2015, 10:23 AM	#7
335iFFM Second Lieutenant 23 Rep 210 Posts Drives: 335i Performance Join Date: Jan 2013 Location: Germany iTrader: (0)	It's not the DCT. At least if you didn't use LC. LC destroys the clutch pack. When DCT slips RPM skyrocket and the car won't accelerate.
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03-14-2015, 10:26 AM	#8
Bowser330 Lieutenant Colonel 289 Rep 1,575 Posts Drives: i3 REX Join Date: Jan 2011 Location: Socal iTrader: (0)	I don't believe it is the same unit as the f10 m5 also Terry is currently getting the Dodson clutch upgrade, if you'd be at all interested....
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03-14-2015, 10:35 AM	#12
MasterC17 Captain 329 Rep 984 Posts Drives: 2015 BMW M3 Join Date: Aug 2014 Location: Massachusetts iTrader: (3)	Is this happening with DSC off? If you have DSC on, or MDM on, that's what is going own. If DSC is off, I know what you're talking about, and yes it is the clutch slipping. Just wait, the more boost you run the worse it gets Just incase others are not aware, even on lower boost settings (e.g. MAP 2) the DCT clutch will slip for a split-second until it catches. __________________ 2009 X5d \| 2007 E90 Track \| 2002 M3 Track \| 1991 535i Track
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03-14-2015, 10:39 AM	#13
8600RPM Lieutenant Colonel 657 Rep 1,749 Posts Drives: e92 m3 Join Date: Oct 2014 Location: AZ iTrader: (0)	I guess I'll need to do more trials with traction off, mdm on vs off etc as I can't be certain now which settings I've had on which tune. I know for me the sweet spot from a former e92 v8 guy is the ess linear tune adding 3 to 4 psi boost in a progressive fashion that pulls in a more linear fashion to redline as it keeps power at 460whp from 5400 to 7400. no lag, shifts hard but smooth and it's a lot of fun. Sometimes people get caught up in max power dyno but more boost seems to add lag, less ability to put power down and less linear feeling. However I'm still frankly interested in answering my own dct question so I'll play this weekend on trying scenarios
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03-14-2015, 11:00 AM	#14
8600RPM Lieutenant Colonel 657 Rep 1,749 Posts Drives: e92 m3 Join Date: Oct 2014 Location: AZ iTrader: (0)	Clearly this isn't the same unit as m5 u think its safe to say
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03-14-2015, 11:01 AM	#15
8600RPM Lieutenant Colonel 657 Rep 1,749 Posts Drives: e92 m3 Join Date: Oct 2014 Location: AZ iTrader: (0)	Then again the inertia change given the 1000 pounds of less weight is much faster and perhaps adds stress to clutch when we get up to 475whp and above
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03-14-2015, 11:18 AM	#18
8600RPM Lieutenant Colonel 657 Rep 1,749 Posts Drives: e92 m3 Join Date: Oct 2014 Location: AZ iTrader: (0)	I like a turbo kick buy if it can't put power down or you need to roll into it more, you are effectively creating a more linear delivery with your foot. I like as much kick as possible with dct biting hard, no disruption at full throttle shifts and not having to overly feather the throttle
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03-14-2015, 11:43 AM	#20
8600RPM Lieutenant Colonel 657 Rep 1,749 Posts Drives: e92 m3 Join Date: Oct 2014 Location: AZ iTrader: (0)	Yes that woukd be big help as power potential increases
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03-14-2015, 04:29 PM	#22
Hobbination Lieutenant 65 Rep 503 Posts Drives: 2015 M4 Join Date: Dec 2007 Location: Honolulu HI iTrader: (0)	Same rear end and final drive ratio as M5 tho. That's confirmed. Not 100% on the DCT. They share some parts I'm sure.
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