BMW 6HP TCU TunerPro XDF development sponsored by BimmerBoost.com
Hi guys,
Clemens at XHP Flashtool has been very generous in providing us with a TunerPro XDF in order to do custom TCU tunes. At least 80% of anything that you'd ever want to change for doing a custom performance tune is defined in that XDF. A few of us recently also defined the torque limit per gear table and not only has Clemens now published this table but also a general torque limit table as well which has saved us testing, more looking and more testing. I can't thank Clemens enough for providing this XDF.
We found the torque limit per gear initially from hours or manual searching for known close values and hints at stock values from those that knew the table. Finding anything this way is extremely limited and that could well have been the only thing we could have found that way.
Next, I tracked down a comparatively low cost source compared to what people were asking at more mainstream sources, but still pricey for individual enthusiasts to take the risk buying, for two WinOLS OLS files for suspected similar TCUs (VAG 6HP28 and BMW 8HP45) as there is no publicly available OLS for our TCU ROM. These are effectively leaked full map information for the TCUs that they apply to. @TwistedTuning generously stepped in and purchased both of these OLS files. This paid off well because it turns out that the VAG 6HP table layout is very, very similar to ours for the most part. I was able to track down a handful more tables that I think will be useful for tuning, based on just an exported map list from the OLS file as these files were not able to be opened with the latest WinOLS demo. If you end up doing custom TCU tunes or receive a custom TCU tune, please consider swinging a small PayPal donation through to Justin at @TwistedTuning . We would not have these files without him.
The big hurdle/wall that we had ran into was that we can only do so much with an exported map list. There are sometimes 20 or more maps with the exact same name! What on earth does each one do? I was preparing for the worst (flashing and testing every single one to see which gear change it applies to, rinse and repeat). This is where @Sticky at BimmerBoost.com has stepped in and put his hand up to make the substantial purchase and provide a WinOLS license for 6HP XDF development. I have just finished getting this set up and I've just gone from insufficient information to information overload! All of those identically named maps now are in separately labelled folders! We now have the axis information and much more. I haven't even delved in to some of the advantages the full version has over the Demo yet either! This has opened the floodgates for moving forward with the 6HP TCU XDF development. Support those that support us! BimmerBoost.com certainly has a great user base and it's always been my preferred forum for technical discussion.
There are 2-4 main people playing around with table discovery. Some the odd hour here and there and others more. I believe most of them drive diesel cars and everybody has different priorities of what tables they want to get defined. We're just going to chip away at what we each most want to find independently of each other and share our findings.
Here are some of the things I'll be looking at getting defined soon:
- Torque re-introduction ramp rate after shift torque intervention. I think slowing the rate of torque re-introduction just a little should do wonders for post-shift timing corrections. I know there are many ways to get around this but some are compromises and I think this will be the best fix yet.
- Main line pressure related tables and getting a better understanding of useable limits to shift pressure tables.
If there is some sort of feature or function that you think might be controlled with TCU software and you think would be handy to be able to tune, this is the thread to suggest it.
We'll be sure to share any updates on this thread and the official community XDF will be coming soon to BimmerBoost.com after verifying a few new additions!
