[dextuar]

Thanks!

[bradsm87]

OK so I've only just now had the chance to get back into this.

I've brough this up with XHP before.

Now I've significantly raised the 2>3 shift points in both Steptronic 1 and Steptronic 2 (from 2750 to 5000), converting to around 12,000 engine RPM, but it still just upshifts as soon as it redlines every time.

What's the secret to getting it to hold gears?

[bradsm87]

Allright so I've raised the Shiftmaps significantly and all of the below to 7600 but it still automatically upshifts in M mode :

Motordrehzahlschwelle bei Gangmassnahmen (all gears) - was 7000
Turbinendrehzahlschwelle bei Gangmassnahmen (all gears) - was 7000
Schwelle Motorabregeldrehzahl - was 6500
Motordrehzahlschutz: damit es keinen Konflikt zwischen Kolben und Ventilen gibt, schaltet das Getriebe bei dieser Motordrehzahl hoch. - was 7100

There is heaps of other stuff in the "Gang-Massnahmen" folder like output shaft speed thresholds and road speed thresholds. Surely we don't have to change all of this stuff just to disable automatic upshifts in M mode?

Any other ideas?

[bradsm87]

Originally Posted by RBT-Tuning

Hi guys,

avoiding automatic upshift in M mode is no problem, can be done just through shiftmaps.

This is not the case with the 335i ZB number 7603535 or 7603537 at least. I've found one other limit to raise but it still upshifts automatically in M mode. What's the trick?

[DWR]

Originally Posted by bradsm87

This is not the case with the 335i ZB number 7603535 or 7603537 at least. I've found one other limit to raise but it still upshifts automatically in M mode. What's the trick?

Silly question, you can lower it in the shift maps right? Just on the off chance that they are not labeled correctly or completely mapped in the XDF.

Sounds like we are talking about a switch and not a scalar as you have been trying. As you state, it changes with the DME, so it does not make sense it could be a scalar in the TCU. Unfortunately, I have not come across anything like that. This is a non issue in the diesels.

[rjahl]

Brad,

Have you tried lowering the RPM limit scalar to see if you have the correct one?

I know with the GKE 211, I only needed to adjust this single scalar and each upshift value in the tiptonic shiftmaps.

[bradsm87]

Originally Posted by DWR

Silly question, you can lower it in the shift maps right? Just on the off chance that they are not labeled correctly or completely mapped in the XDF.

Sounds like we are talking about a switch and not a scalar as you have been trying. As you state, it changes with the DME, so it does not make sense it could be a scalar in the TCU. Unfortunately, I have not come across anything like that. This is a non issue in the diesels.

If I lower the DME rev limit, it holds the gear without upshifting.

I don't want to disable automatic upshifts with a switch because I only want 2nd and 3rd gears not to automatically upshift.

[bradsm87]

Originally Posted by rjahl

Brad,

Have you tried lowering the RPM limit scalar to see if you have the correct one?

I know with the GKE 211, I only needed to adjust this single scalar and each upshift value in the tiptonic shiftmaps.

All of the surrounding data lines up the same as the E60 one and doing a WinOLS search with +/- 1000 range, that's the only instance of it that would match and it's in the right area of the calibration data area too.

I will lower it to test though. Good idea!

[DWR]

Originally Posted by bradsm87

If I lower the DME rev limit, it holds the gear without upshifting.

Originally Posted by bradsm87

I've brough this up with XHP before as I'd already tried some years ago significantly dropping the rev limiter on the DME but it still upshifted at rev limiter anyway.

I guess these 2 responses seem to be in conflict to me.

Originally Posted by bradsm87

I don't want to disable automatic upshifts with a switch because I only want 2nd and 3rd gears not to automatically upshift.

Thanks for clarifying that. Let's be precise in saying that there is always automatics shifts in each gear in all modes. Whether those shifts are actuated depends on whether or not some other event occurs prior. The case that you are experiencing.

I am going to bow out because I think rjahl is being more help to you. Good luck, I hope you figure it out soon!

[bradsm87]

Originally Posted by DWR

I guess these 2 responses seem to be in conflict to me.

Yeah I remembered wrong there. Sorry about that. I thought I had actually tried it years ago but I had read it from someone else but not tried it myself I should have gone back and edited that post (edited now).

Originally Posted by DWR

Thanks for clarifying that. Let's be precise in saying that there is always automatics shifts in each gear in all modes. Whether those shifts are actuated depends on whether or not some other event occurs prior. The case that you are experiencing.

I am going to bow out because I think rjahl is being more help to you. Good luck, I hope you figure it out soon!

Cheers for the ideas so far. You've both been great help. I'm dealing with an unrelated issue with the engine side of things now so I've moved away from the upshift issue for a while.

[DWR]

Originally Posted by bradsm87

I'm dealing with an unrelated issue with the engine side of things now so I've moved away from the upshift issue for a while.

Awhh, sorry to hear that.

[bradsm87]

Originally Posted by DWR

Awhh, sorry to hear that.

Nothing major. Just the high pressure fuel pump maxing out at lower power/boost than I expected and what other people seem to get.

[rjahl]

So, getting the GKE 211 to shift nicely has been a struggle. I am making good progress but I thought I would share an idea.

I just recently decided to reduce the engine torque through the shifts, to an even lower value. The latest tests have me pulling 15% more power than stock in certain places.

The shifts did get softer but they also slowed down? Thinking about this, the shift pressures are based on engine torque and RPM. I never thought that this was torque "after intervention". So when you reduce power through the shift, this also cuts shift pressure and you need to re adjust.

Latest test file seems to confirm this but I don't have enough miles on it to confirm.

[bradsm87]

Originally Posted by rjahl

So, getting the GKE 211 to shift nicely has been a struggle. I am making good progress but I thought I would share an idea.

I just recently decided to reduce the engine torque through the shifts, to an even lower value. The latest tests have me pulling 15% more power than stock in certain places.

The shifts did get softer but they also slowed down? Thinking about this, the shift pressures are based on engine torque and RPM. I never thought that this was torque "after intervention". So when you reduce power through the shift, this also cuts shift pressure and you need to re adjust.

Latest test file seems to confirm this but I don't have enough miles on it to confirm.

I also wondered this. In a lot of the tables in the various OLS files, the torque axis is labelled as an average between two abbreviated torque items. Maybe it's the average of torque before and after intervention?

I'd also really like to know this for sure. If that's the case, I'd rescale all of my shift tables and keep pushing some of my shifts a bit harder.

It does make sense because with factory calibrations, the shift table torque axis values end well before the torque limit.

[bradsm87]

I'm reeeeeally not having fun in this car with it automatically upshifting in M mode all the time. Why not continue the open community spirit of this project like it was in the beginning? RBT-Tuning

[DWR]

Originally Posted by bradsm87

I also wondered this. In a lot of the tables in the various OLS files, the torque axis is labelled as an average between two abbreviated torque items. Maybe it's the average of torque before and after intervention?

So, more intervention would create a faster shift because the clutch pressure would be proportionally higher. For example, a 20 % reduction in engine torque would only result in a 10% reduction in clutch pressure. Conversely, no torque reduction would result in 20% greater torque, but only 10% more clutch pressure - resulting in a softer, slower shift. That isn't what is being reported.

Originally Posted by bradsm87

I'd also really like to know this for sure. If that's the case, I'd rescale all of my shift tables and keep pushing some of my shifts a bit harder.

It does make sense because with factory calibrations, the shift table torque axis values end well before the torque limit.

The torque limits are for the transmission and not a function of the engine torque. Some factory calibrations come closer to the limit than others.

[DWR]

Originally Posted by bradsm87

I'm reeeeeally not having fun in this car with it automatically upshifting in M mode all the time. Why not continue the open community spirit of this project like it was in the beginning? RBT-Tuning

Brad, I have asked this before, but don't think I heard the answer. Are you able to modify the downshift in M mode?

[bradsm87]

Originally Posted by DWR

Brad, I have asked this before, but don't think I heard the answer. Are you able to modify the downshift in M mode?

I haven't changed the shiftmap in the downshift direction but the downshifts in the steptronic shiftmap do happen where expected.

[DWR]

Want to make sure we aren't missing something like there is another map that is controlling the shift. Need to eliminate the obvious first.

You've been logging OSS to verify that, right? If you come up on that shift slowly, you should get a pretty accurate OSS value. That should not be too hard to find in the cal. Just brainstorming ...

[GCamjose]

Hello all User, i have request for transmision on Gearbox 5HP19 EGS GS8.61.15.
Have anything a liddle information on this TCU for me ?
Thanks in advance

[GCamjose]

would be very happy if someone can explain to me what function has to do with how fast the clutch or how snow the contact pressure is controlled?
the problem with me is the torque is very fast what leads to the slip of the clutch.
would like the z.b at half pedal position the maximum pressure on the clutch in 5 gear is applied.
is that possible?
thank you guys!

[GCamjose]

hello nobody nobody can help me?
again herewith the request for some help for my question!