[Blueeyesredpanda]

Originally Posted by hassmaschine

The biggest hurdle is probably #6. We were just discussing it the other day.

the RSA signature is 1024 bit, so brute force cracking it isn't an option. Beside that, the TCU uses code compression, and without knowing exactly how it was compressed, there's no way to decompress it, thus no way to disassemble it and figure out another way to delete the RSA signature check.

Another possible way to flash would be BDM, as I believe it still uses an MPC5xx CPU - however, since the TCU is inside the transmission, that would be rather difficult to do, and you wouldn't want to be pulling the transmission apart to flash multiple tunes for testing. Possibly, the public keys could be replaced with our own, and we could generate a valid signature that would flash, but you'd still have to pull everything apart for a "maybe" (or supply a TCU from a parts car with the GM trans).

Any updates regarding the GM flash? Did you receive a donor TCU from anyone yet?

[hassmaschine]

nope, nothing. I don't have a TCU, which would be the first step to making any progress.

[dh58]

Originally Posted by blackout_ssri

Hi guys,

Long time lurker, first time poster here.

First, I want to say that your work is amazing and thank you for what you've built already.

Based on information that I gathered on this forum and others, I'm in the process of building an XDF for the GKE211.

The file is not complete at the moment and lacks some of the rows and column information as it was not of the most importance (I've only been on it for a few days).

I'd like to share this file with you in the hope that it'll help others and maybe help me understand quicker what are some of the maps.

The files is offset to work with a binary of the 'oda' file, no full dump is required (or supported). It is based on the 'public' xdf for the Alpina tunes (can't remember what DME it's using) and only contains the already figured parameters + the scalars that are not mapped yet.

What gave me some thought was that I found 5 sets of clutch pressure maps, whereas in the original xdf there were only 4 (including the Alpina M map).

Disclaimer: the categories for the parameters are not updated, use this file only for educational purposes.

rjahl Thank you for posting the TCC maps, they were the starting point for me.

In the zip you can find the XDF and a stock binary to use with it.

Kind of related question since you've seen what's in the code..

A ZF engineer mentioned to an owner of the 6HP21 (but he meant it for all 6HPs) transmission that the software is optimised for the viscosity and performance properties at different temperatures of the Lifeguard 6 oil. (and that's why you should only buy Lifeguard 6 oil and nothing else).

Have you seen anything that might make you think that or otherwise?

[rjahl]

Originally Posted by dh58

Kind of related question since you've seen what's in the code..

A ZF engineer mentioned to an owner of the 6HP21 (but he meant it for all 6HPs) transmission that the software is optimised for the viscosity and performance properties at different temperatures of the Lifeguard 6 oil. (and that's why you should only buy Lifeguard 6 oil and nothing else).

Have you seen anything that might make you think that or otherwise?

With the first generation 6 speed gearboxes there is no method for pressure metering. As such, all parameters for clutch filling, unloading and friction are based on expected values. These values were based on the physical properties of the recommended fluids.

I'm not saying that other fluids will not be close enough for the gearbox to adapt. On my last change I used Pentosin and it worked but Shifts where rough until the TCU build new adaptation tables.

I can also say with certainty that the ZF Fluid is only good for about 60k miles. After that, the friction modifiers break down and the clutches don't work like they should. Just read the Jaguar and Hyundai forums. I few professional transmission shops will say the same.

[BMWSource]

Hello Fellow E90 owners, I have an 06 E90 330Xi with the 6 speed automatic gearbox, & I was wondering if my car has the GM gearbox or the German built ZF6HP19? I personally like the ZF more.

[rjahl]

Real OEM says its the ZF gearbox.

[rjahl]

Originally Posted by blackout_ssri

Hi guys,

Sorry for not posting any updates in a while but I haven't got any at the moment, I've been caught up with work and other personal stuff.

Not going to lie again and say tomorrow but by the end of next week (yay, holidays) I should have most of the important stuff migrated to XDF format, categorised and all that.

I'm looking to swap my N46 for an N52/53 3.0, I think the gearbox should handle the torque right? In any case I'm going to buy a donor car for this project, but not going to start it in the near future anyway.

Have you made any additional updates to the XDF? Any tuning updates?

[rjahl]

I have not been doing much with this for a while, so I was easily persuaded to help set up a trans tune on a 325I.

Feeling cocky, We flashed a tune that I was running on my Z4, I knew it worked and all I had to do was offset a few bytes to the correct locations for the 3 series program.

What a epic fail. Nothing but errors and after errors. I finally had to break the tune down into components and flash each section until I knew what caused the problems. In the end, two problems emerged.

1. The hardware on the Kombi was not compatible with the gear display switch. Like another early model 5 series I worked with, the software will not show an active gear in D,S and manual. This was a 2006 325 with a build date of 2005 (mid).

2. The Torque reduction maps were a problem. Not the up-shifts but the ones programmed for a little throttle increase or rev matching during down shifts. The stock Z4 maps are much more aggressive and did not work on the E90.

I tried making changes to these maps on my Z4 and ran into problems. Add just a little bit too much and the whole torque reduction system just shut down. no errors logged but the shifts were bad. With the E90, the car went into limp mode and would not shift.

Map on the left is a stock 325 file while the map on the right is from an E85. This is the 2>1 down shift Torque control map. Torque and RPM on the Axis. Cells represent a torque modifier in %. Notice how much more he Z4 maps increase torque during an overrun (negative torque) down shift.

[tomaxsas]

Hey guys. I want to disable gear display on D and S mode, in gke211 which bit in map should i edit? I have xdf for newer gearboxes but its differ on gke211

[rjahl]

Originally Posted by tomaxsas

Hey guys. I want to disable gear display on D and S mode, in gke211 which bit in map should i edit? I have xdf for newer gearboxes but its differ on gke211

Stock files have the gear display disabled in D and Sport mode. We had to enable it for the tunes files.

Are you trying to make the letter D and S go away?

[tomaxsas]

Originally Posted by rjahl

Stock files have the gear display disabled in D and Sport mode. We had to enable it for the tunes files.

Are you trying to make the letter D and S go away?

i have tune files with enabled display, but old kombi cannot display it, so want to turn it off

[rjahl]

Originally Posted by tomaxsas

i have tune files with enabled display, but old kombi cannot display it, so want to turn it off

Must be an older 5 series. That sucks. It's an easy fix. Change the kombi display value from 2 to one.

Sorry don't remember the exact address but I can pull it from my files tonight. Or you can PM the tune to me and I can fix it.

[tomaxsas]

Originally Posted by rjahl

Must be an older 5 series. That sucks. It's an easy fix. Change the kombi display value from 2 to one.

Sorry don't remember the exact address but I can pull it from my files tonight. Or you can PM the tune to me and I can fix it.

thanks, will wait till you can look. i have which bit need to flip for 6hp28, but this one is older and not in same place, so would be good to know

[rjahl]

Originally Posted by tomaxsas

thanks, will wait till you can look. i have which bit need to flip for 6hp28, but this one is older and not in same place, so would be good to know

Try 0x 6F356 your tune will have a value of 2 and stock should be 0. Stock file shown.

This is a GKE211 in an E90, the GKE 191 is the same location.

[E92William]

It'd be great to achieve a transmission tune level of aftermarket support for the 6l45 tranny the same way the n54/n55 cars have.

I wonder why XHP hasn't paid any attention to the huge market of N52 cars around. You'd think they'd at least have provided a tune for N52 cars with the 6hp19 since they have it for n54 with that transmission.

I know a few people with tuned zf boxes on turbo cars and it makes a big difference, close to a dct feel almost id say

[rjahl]

Originally Posted by E92William

It'd be great to achieve a transmission tune level of aftermarket support for the 6l45 tranny the same way the n54/n55 cars have.

I wonder why XHP hasn't paid any attention to the huge market of N52 cars around. You'd think they'd at least have provided a tune for N52 cars with the 6hp19 since they have it for n54 with that transmission.

I know a few people with tuned zf boxes on turbo cars and it makes a big difference, close to a dct feel almost id say

Just a reminder, XHp was created by a few Intelligent and motivated BMW forum members. Nothing magical or mega finance related. There was a need and they cracked it.

I was l lucky and managed to break through the earlier generation 6hp with the clues left behind.

Just takes motivation, hard work and sometimes a little help from some friends.

[awhc]

I thought xHP have a tune for the ZF6HP19. I am planning to get it for my E87 130i with the N52.

[rjahl]

Originally Posted by awhc

I thought xHP have a tune for the ZF6HP19. I am planning to get it for my E87 130i with the N52.

They do now, I did my tuning BEFORE Xhp supported the first generation 6HP.

Anyways half the fun is figuring things out for yourself. No joy in simply buying a tune. My trans tune is probably better anyways. I programmed what I wanted rather than what was the most profitable for some organization.

Doing the same with my N54, really easy to purchase MHD an go burn up a set of tires or turbos. To me the fun and challenge is tuning it myself. No, I have not broken anything yet.

[relekexe]

Hi, I've e61 2007.03 with ZF6HP19Z, BMW part number is 7591971 nad assembly number is 7603576. I want to enable gear display. Can it be done? Bimmerlabs shows that i've GKE211 but when i type assembly number in winkfp i have gke215 tree. Last 7 vin digits are CU01336.

Thx guys

[relekexe]

Btw, there are program called BMWFileCreator wich is converting .0pa and .0da to .bin format...

[rjahl]

Don't waste your time with BMWFile Creator. Changing the single byte to enable the Kombi display in the GEK215 is trivial. Your problem is flashing the modified file back into the module. Today, only Xhp has the software available.

[JiangMingjin]

how much torque the 6HP19 can afford？with some light tune，change some small part