Spec-R slipping on 30+ psi

[rominun]

Little back story:
I have a 2010 135i and i DCT swapped it. Car makes over 800 whp so i opted for SSP-specr clutches. i got them hot at a half mile event (even with my 7x11 inch aftermarket cooler) and ever since they they slipped on anything more than 26 psi(6766). Relearned the clutches and put new fluid. still nothing. Took tranny out saw that the clutches were brown and sent them to kris to see what was up. he said they were 60% worn and that they held 800 ft lbs when he tested them so he sent them back saying they are good to go(worn 60% over 4k miles is pretty bad). He shimmed them up and sent them back. Installed them with new tranny filters and the clutch would not adapt saying they are out of tolerance. Clutches worked for a few weeks until i went out again to a half mile event and after turning it upwards of 30 psi they just all out slipped from then on. Im trying to see why this is happening. maybe faulty clutch pack? i sworn it had to do with the jb4 but terry said it doesnt interfere with line pressure at all. Im custom tuned BEF by @pure_evil_tuning (very familiar with DCT cars) on INA0S with line pressure maxxed out and torque tables adjusted. any pointers at this point are really appreciated. im so tempted to throw the DCT out and go twin disc lol.

 

[aus335iguy]

Yours is a rare use case in the n54/55 world. It’s not often we see DCT cars with big singles but it’s becoming more common. The box and clutches have been seen to handle much more than the spec you have but in f10 form and mostly it hinges around reported torque from the DME

Some questions so those more knowledgeable (not me can help..

Do you have any logs?
Have you tried running without JB4 and if so what happens?
What’s the maximum reported torque you are seeing reported by your DME ?
Are you using the recommended fluid ?
Have you filled it and adapted using the spec’d method ?
Did SSP or pure-evil make any other recommendations ?

 

[rominun]

Yours is a rare use case in the n54/55 world. It’s not often we see DCT cars with big singles but it’s becoming more common. The box and clutches have been seen to handle much more than the spec you have but in f10 form and mostly it hinges around reported torque from the DME

Some questions so those more knowledgeable (not me can help..

Do you have any logs?
Have you tried running without JB4 and if so what happens?
What’s the maximum reported torque you are seeing reported by your DME ?
Are you using the recommended fluid ?
Have you filled it and adapted using the spec’d method ?
Did SSP or pure-evil make any other recommendations ?

Yes i have a log of it slipping. i will attach here.
If i get rid of the jb4 i cannot utilize my port injection or boost controllee as my jb4 only conteols those two. and if i run it without jb4 it doesnt run right. i want to check line pressure on higher boost but cannot. ive dont it on map 0 which is wastegate and it was around 17-18 bar.
torque should be found in the log unless unavailable
i was using pentosin ffl4. still slipped. im running 3100 DCT fluid now.
i have filled it multiple times, even raked the car forward and went thru the gears. did oil bleed procedure.
SSP told me to get rid of the JB4. Jason at pure evil sent me a new revised torque table map but right before flashing i blew my engine up. lol

 

[rominun]

Here the CSV file

 

[aus335iguy]

I’m no good with JB4 logs but the max calc torque here seems to be 52...

 

[Twisted Tuning]

if the JB4 log is correct. Seems max torque being sent to the trans is 520nm. That is not enough for the DCT at your power level. Adjust your tune to send more reported torque to the TCM so the DCT increases clutch pressure. but im basing this response off a JB4 log which may or may not even be accurate.

 

[aus335iguy]

Correction 53 so 530nm I’d assume ?

 

[doublespaces]

Here the CSV file

Can you upload the log here: https://datalogs.spoolstreet.com and then copy the BB code back into a reply here.

 

[rominun]

Can you upload the log here: https://datalogs.spoolstreet.com and then copy the BB code back into a reply here.

sounds good. here it is

Additional information

Firmware	Interface	Engine	TMAP_V	AvgIgn	DWP	MethTriggerMode	FF	MethSafeMode	MethAdd	MethScale	MethPSI	VIN	E85_Setup	VFF_Offset	fuel_30	fuel_35	fuel_40	fuel_45	fuel_50	fuel_55	fuel_60	fuel_65	fuel_70
30/136//2	JB4 Android A281	E Series - N54	1.94	21.1	70	0	67	0	0	99	9.9	7C50AVK96244	NONE	132	50	45	40	40	40	45	50	50	50

BoostSafety	PID Gain	AutoShiftRed	Fuel_OL	FUA	1st_limiter	2nd_limiter	3rd_limiter	FUD	N20_TMAP	6CylMode	LastSafety	duty_15	duty_20	duty_25	duty_30	duty_35	duty_40	duty_45	duty_50	duty_55	duty_60	duty_65	duty_70
35.1	25	90	90	0	2.0	1.0	0.0	1_ON	1	7	3	0	0	0	0	0	0	0	0	0	0	0	0

Hide legend Reset zoom

 

[doublespaces]

sounds good. here it is

Additional information

Firmware	Interface	Engine	TMAP_V	AvgIgn	DWP	MethTriggerMode	FF	MethSafeMode	MethAdd	MethScale	MethPSI	VIN	E85_Setup	VFF_Offset	fuel_30	fuel_35	fuel_40	fuel_45	fuel_50	fuel_55	fuel_60	fuel_65	fuel_70
30/136//2	JB4 Android A281	E Series - N54	1.94	21.1	70	0	67	0	0	99	9.9	7C50AVK96244	NONE	132	50	45	40	40	40	45	50	50	50

BoostSafety	PID Gain	AutoShiftRed	Fuel_OL	FUA	1st_limiter	2nd_limiter	3rd_limiter	FUD	N20_TMAP	6CylMode	LastSafety	duty_15	duty_20	duty_25	duty_30	duty_35	duty_40	duty_45	duty_50	duty_55	duty_60	duty_65	duty_70
35.1	25	90	90	0	2.0	1.0	0.0	1_ON	1	7	3	0	0	0	0	0	0	0	0	0	0	0	0

Hide legend Reset zoom

Maybe @Terry@BMS can chime in on what we're seeing here

 

[aus335iguy]

Excuse my ignorance but is that 530nm that is passed on to the TCU or just some calculated figure in the Jb4? And if you wanted to use a Jb4 and log the actual reported torque, how would one do that?

 

[rominun]

Excuse my ignorance but is that 530nm what is passed on to the TCU or just some calculated figure in the Jb4? And if you wanted to use a Jb4 and log the actual reported torque, how would one do that?

thats what im confused on aswell. i know mhd shows accurate reported torque. in the end if the jb4 if causing all of this i might ditch it but im hesitant because i use it for my port injection and its really doing a good job with that.

 

[aus335iguy]

I’m sure @Terry@BMS can help

 

[rominun]

I’m sure @Terry@BMS can help

I have no idea if this has to do with anything but when i did the DCT swap, i never flashed the msd81's zub to a 335is one. my car just worked without the updated flash. other dct swaps ive done had to have it coded or else transmission would not get out of limp mode. ill be trying that tmrw and ill grab another log but this time on 20psi

 

[rominun]

i did however get it to run Inaos with the help of @jyamona and the special mhd build. i hear now its made to flash inaos on an ijeos ecu without a power class delete in the actual mhd app.

 

[aus335iguy]

All of the ROMs have DCT capability from what I’m led to believe. I doubt it’s the issue here but it can’t hurt to ask Jake

ps I’m IJEOS natively on a 2009

 

[Twisted Tuning]

based on the log, again, your issue is under reported torque causing slipping

 

[rominun]

little bit of update. new l2t tables and ive got up to 56 on the calc_tq. protools shows 700+ nm. question is, is that what everyone on mhd alone are seeing from protools? might end up ditching jb4 for mhd flash only if it comes to it. thanks for everyones help so far !

 

[aus335iguy]

@Twisted Tuning Im fairly certain that he should be seeing anywhere up to 100 and 56 is well short of where it needs to be ?

 

[Twisted Tuning]

You need to ask terry if the log limit of JB4 is limited for calc torq. Or if under reporting the torque thats sent to it or not.

For your power level, the TCM needs to see a minimum of 700-800nm. Id honestly send no less than 900-950nm. But thats just me.