DIY: M track Mode for non-M MK60s

[Rovert]

I find with my car M track doesn't really help much in the dry unless I'm in a super tight/low speed hairpin. If you're forcing the tire to slip with so much dry grip, then that energy release will automatically trip DSC to retard throttle and apply ABS to the corresponding corner.

In the rain though it completely changes and I can put my car into full opposite lock turns because the delay that's added to M track mode is long enough to let the car swing it's rear. But when it happens, DSC kicks in helping to bring the chassis back under control. It will not let you hold a hero drift. You need everything off to achieve that kind of hooning style.

[derbo]

So now I'm curious. If TRAKTIONDIFFERENZREGELUNG set to nicht_aktiv sets DSC into dual mode DSC (rather than the 3 mode DSC where, you know, you have to hold the DSC button to fully disable DSC), then I wonder if setting PRE_MSR to aktiv at the same time will mean m-track is the default DSC mode when DSC is active...

I also wonder what the limits 1 and limits 2 refer to for the understeer and oversteer limits. In other words, does oversteer and understeer limits 1 refer to the "mode 1" DSC, and oversteer and understeer limits 2 refer to "mode 2" DSC (only used when DSC is in the 3-mode setup)? I can't imagine when the two different levels of limits would be used other than the different modes of DSC.

Did you ever figure this out Ryan?

[rkneeshaw]

Did you ever figure this out Ryan?

Never did. I ended up being quite satisfied with the way my DSC is configured that I haven't gone back to toy with it. I detailed my latest changes over here: http://www.zhpmafia.com/forums/showt...730#post452730

Basically its much more subtle now in "normal mode" that I dont have much issue with it. And the one-touch-off makes it super easy to turn off when I know I want to hoon.

[derbo]

Never did. I ended up being quite satisfied with the way my DSC is configured that I haven't gone back to toy with it. I detailed my latest changes over here: http://www.zhpmafia.com/forums/showt...730#post452730

Basically its much more subtle now in "normal mode" that I dont have much issue with it. And the one-touch-off makes it super easy to turn off when I know I want to hoon.

I may have to dig into this again Ryan. You have peaked my interest. Adding the post as a quote in here.

Guys, I made some further tweaks to my MK60 module and I LOVE it.

Lately my DSC has been really annoying because when it steps in, it really STEPS in, and STOMPS all over my fun. It just CUTS throttle and it feels like someone jabs the brakes in the middle of my fun time.

So I started comparing my MK60 settings to the M3 specs, and taking a much closer look.

That's when I looked a lot closer at the Oversteer limits and Gear Torque Control settings.

The oversteer limits (UEBERSTEUERN_MUE_0_2 and UEBERSTEUERN_MUE_1_2) settings are pretty straightforward, I just set them to match the M3 values.

Since I don't purposely understeer my car for any reason, I left the understeer settings alone, the ZHP values are fine IMO.

Next I looked closer at the Gear Torque Control values (GEARMOMENTREGLER_MAX_HA_2 and GEARMOMENTREGLER_MIN_HA_2). I created and/or set values on these so they mirrored the M3's MK60's values. I'm not exactly sure what these were going to do, but, I gave it a shot, and I think these directly influence how intrusive the DSC is when it cuts power, because it is sooooo much better.

It became clear to me (I overlooked this before) that the actual values for the "wert" parameters can, and sometimes are, different between MK60 module versions. e.g. a "wert_04" in the MK60 C6 module doesn't have the same actual value as the "wert_04" parameter in the MK60 C13 module. So in some cases I created a "wert" parameter with an M3 value and used that to get the values the same as an M3. Thanks to derbo's thread here for the detail on creating parameters and setting values:

http://www.zhpmafia.com/forums/showt...or-non-M-MK60s

So the net result is that my DSC module is actually very tolerable now. The oversteer limits let me get on the throttle through the turn and allow the rear to start to step out ever so slightly before the DSC gently kicks in and keeps the car on the line. I have to emphasis gently. Because I almost didn't notice it kicking in, there was no CUTTING of the throttle, just a little adjustment that kept the car powering forward, on target. Also, from a dig, the DSC is allowing slightly more wheel spin before kicking in, and it is still cutting power but not nearly has harshly as the stock settings did.

So the only settings I've changed from stock are those relating to my Wavetrac LSD and one-touch-off, and these.

Car feels so good now, do this at your own risk, but I definitely recommend it.

[rkneeshaw]

I may have to dig into this again Ryan. You have peaked my interest. Adding the post as a quote in here.

It's totally worth it!

[wertyu78]

Finally giving this a shot today. Already pulled the .trc, made the changes in NCSdummy, and wrote the changes to a .man; just got to get out to the car later and give it a whirl.

I've been running the DSC one button on/off setup for awhile, so If I did it correctly, the ZCP settings should be applied to "DSC On", which is exactly what I want - less intrusiveness for when I forget to turn it off (I always turn it off when I get in the car). I'll echo Ryan's thoughts: the default settings for the ZHP are way too intrusive for throttle input.

Good conditions today in Georgia to try this - it's pouring outside and I'm on really worn tires.

[slater]

Good conditions today in Georgia to try this - it's pouring outside and I'm on really worn tires.

LOL.

i have been wanting to do this as well, but i need to get my NCSExpert + dummy skills happening first. when the Touring mechanicals are done, i will definitely be giving this a shot.

[nextelbuddy]

im waiting until i get a newer M3 cluster. the one I have is from a 2002 with a 2001 build date and is missing the M track mode cluster indicator in the lower left corner.

Since I have S54 DME, S54 3.62 Diff and M3 cluster, it should be as easy as just enabling it and be done with it right?

as soon as I get the updated cluster ill tackle this. Shouldnt we be able to assign M track mode enable/disable to the I/O button on the steering wheel? the CSL steering wheel has that same button with the same label (weather or not it has the same function I dont know)

[terraphantm]

CSL/ZCP module has a different flash - no known way of flashing the software yet.

[nextelbuddy]

just an update here. My car has MK60 mdule, MSS54 DME, 24H cluster.

with Terras help in other cluster related threads. I was also able to flash M track mode properly.

I had to make sure my VO was set to *EV53 first in my LCM otherwise my MK60 would not respond to my NCS expert requests read or writes. i tackled flashing the MK60 module with the proper changes first.

then tackled flashing the cluster to enable m track mode as well.

now when I press the DSC button, only the M track mode indicator displays in the cluster and press + hold DSC button displays the DSC light in cluster and M track mode goes away.