DCT - Possible xHP Flash

[carabuser]

Sure thing, found those in ediabas today. I have no idea what's in that motor data, but seems there's really only a few things it could be.

I was going to try to log today and make some comparisons, but it's raining. Maybe tomorrow. I've generated the same crappy shifts playing with things in the DME (with stock ceiling), so if the ceiling increase is also raising/allowing a higher torque somewhere than the TCU will currently accept, we could potentially tune it back down to keep good shifts with the higher ceiling.

I'm guessing those addresses are TCU addresses. Would be nice to know the DME addresses, would make it easy to find them in the logic and monitor them.

It's only "0xCF1C message (motor data, PT-CAN) from the motor controller" that I think is promising. The torque values aren't causing the crappy shifts because those reported values stay consistent in logs with crappy shifts and logs with good one.

 

[RSL]

Why the hell would a gearbox care about any of that stuff?

Probably stability, safety, errors, op conditions, etc.

I'm guessing those addresses are TCU addresses. Would be nice to know the DME addresses, would make it easy to find them in the logic and monitor them.

It's only "0xCF1C message (motor data, PT-CAN) from the motor controller" that I think is promising. The torque values aren't causing the crappy shifts because those reported values stay consistent in logs with crappy shifts and logs with good one.

Yeah, should be TCU. One of the CAN hackers would need to try to track it down on the bus or maybe @jyamona has a DME address.

The other torques may not stay the same even if torque actual does. I know I can move clutch torque request without torque actual changing and raising that almost at all gives me the exact same crappy shifts as raising ceiling.

 

[Benji335i]

Looking forward to this.
Will this help the clutches apply more pressure?

 

[aus335iguy]

Looking forward to this.
Will this help the clutches apply more pressure?

Possible yes. Not above the capability of the box itself of course. Most 335i’s you can get better performance by increasing reported torque from the DME tuning.

 

[Begood69]

XHP for dct realease monday guys

 

[Benji335i]

Possible yes. Not above the capability of the box itself of course. Most 335i’s you can get better performance by increasing reported torque from the DME tuning.

sweet, yeah I’ve nearly finished my build with a pair of RBs BQ tuned too, who specialises with the DCT! Look forward to seeing what’s available from this for our platform

 

[carabuser]

I don't really follow xHP as previously they only bothered with the slushboxes. I'll certainly be getting it on Monday though.

How does it operate on the 8AT platform? I can see that you purchase a flasher license and OTS map pack similar to MHD. I'm guessing the OTS maps won't be unlocked and there is no XDF out there for the DCT so the only options is a locked OTS map?

 

[carabuser]

Reading through their site it seems they already updated the literature in the manual to include the DCT. Section 6 talks in details about the DCT.

https://www.xhpflashtool.com/fileadmin/user_upload/manuals/xhp_manual_en.pdf

 

[JohnDaviz]

Update on their FB Page:

Content besides Video:

We are very proud to present another worlds-first to the BMW Community!

We've been working on this project for 15 months and finally arm-wrestled the BMW Dual Clutch Transmission! Not only are we able to flash first (E-Series) and second generation (F-Series) of the DCT through OBD (see www.xhpflashtool.com for adapter options), we are also able to offer you guys OTS Maps with raised line pressure and fine-tuned maps, to reliably work even on cars with double the stock-power. No more spongy shifting on high-power cars with the DCT trans. It now bangs the gears instant, consistent and punchy. Customers will also be able to further adjust shifting to their liking with a few easy sliders in the App. From a wheel-spinning, super-hard 1-2 shift, to a super-smooth and fast shift in 2 minutes with xHP. (awesome in the rain)

Available Custom Options:

- Adjust Launch RPM Target/Min/Max
- Adjust Shift-Points
- Adjust Torque Punch on Upshift
- Torque Reduction during Upshift
- Configure Max. RPM
- Rear Differential Ratio

DCT-Support will be available from early July 2020 for 135i, 335i and Z4 35i(s) E-Series. Support for F8x M-Cars will follow in the next weeks, once testing is finished. Other variants at a later stage.

Licenses and Maps can be bought from July 6th on at https://shop.rbttuning.com
Weniger anzeigen

 

[NoGuru]

I can't believe DCT are finally getting all this function. My track times should be a lot faster I would think.

 

[RSL]

Good thing the FD is in that list now because I was actually on the fence with the functionality previously listed. Now, M3 EGS or play with what they have so far first? Hmm.

The only input they specifically mention in there is L2T (torque actual), so I hope we're not stuck on stock request tables like ATs.

 

[azshantris]

I'm really excited and also really nervous about this. Doesn't sound like it's for M cars so my M3 gws may need to be swapped back..?
I maybe have done some mostly irreversible modding and would need new parts.

 

[carabuser]

I'm really excited and also really nervous about this. Doesn't sound like it's for M cars so my M3 gws may need to be swapped back..?
I maybe have done some mostly irreversible modding and would need new parts.

Highly doubt it. The TCU program is what matters and you haven't changed that.

Plus they said M support is coming in a week or two.

 

[azshantris]

Highly doubt it. The TCU program is what matters and you haven't changed that.

Plus they said M support is coming in a week or two.

Is the M3 GTS software not a different program in essence?
Being different and requiring the M3 shifter is what makes me worry about compatibility.
I saw they're adding F series M support but didn't see for E series. If they do support E series M cars then I would be all good.
Otherwise I'll have to decide if it's worth it to revert to my stock shifter or see if they can't do something special.
Definitely a super sweet breakthrough that lots of people have been yearning for for years

 

[RSL]

DCTs are the same in M/non-M E series. ZBs are different, but as long as the base tables they're touching are in the same spots, should work. I suspect (hope) this is why they are using % sliders instead of absolute values, because TCU roms will have different stock values.

If that's the case and with the FD changeable, would make drive logic on non-M as easy as EGS swap, TCU flash and some coding. No driveline/diff swap needed anymore. Fingers crossed.

 

[namsu2430]

If that's the case and with the FD changeable, would make drive logic on non-M as easy as EGS swap, TCU flash and some coding. No driveline/diff swap needed anymore. Fingers crossed.

That's what I'm hopeful for. I don't really want to change the final drive ratio as I quite like 2.56 and have M3 GWS waiting to go in.

 

[aus335iguy]

That's what I'm hopeful for. I don't really want to change the final drive ratio as I quite like 2.56 and have M3 GWS waiting to go in.

Well, given @Olza has mapped out the bin all we need to do is have the ability to flash a custom file.

 

[aus335iguy]

They don’t mention e9x M cars specifically just F series ?

 

[aus335iguy]

DCTs are the same in M/non-M E series. ZBs are different, but as long as the base tables they're touching are in the same spots, should work. I suspect (hope) this is why they are using % sliders instead of absolute values, because TCU roms will have different stock values.

If that's the case and with the FD changeable, would make drive logic on non-M as easy as EGS swap, TCU flash and some coding. No driveline/diff swap needed anymore. Fingers crossed.

I hope you’re right, but it doesn’t make sense. They are leaving e9x m cars out when if what you surmise is true they could release to them at the same time...

 

[aus335iguy]

Also... the price of M parts I just bought but no longer need just tanked