Obioban's 2005 IR/IR Coupe

[r4dr]

That matches my experience with DS2500 equivalent pads to a T. My usage was on a heavier (3800 lb) & 500+ HP car, but on Super Sports. They *disappear* but at least they don't lose bite. Sounds like you got them even hotter than I did, because I've never gotten deposits I could feel in the pedal, though the rotors don't look pretty.

What ducting do you have? Are you running hoses or just oversized funnels in the bumper without hoses?

[Obioban]

So, this weekend I did my first track event with the 996 brake setup. Results were... mixed. Running DS2500s front and rear (the only track pad FCP sells)...

pros:
-no fade
-pedal feel was good
-braking performance didn't feel worse in any way

Cons:
-I went through an entire set of pads in 2 days on track (vs 6-8 events on the brembos with RE10s, so figure 17-18 days on track)!
-pad deposits were formed, though they self cleaned when back to driving on the street (deposits did not form with the brembos)

... this is with my car having huge brake ducts and it being a moderate temp weekend (high of 77, low of 58, on my time on track).

So, not sure what to do. I'm going to stick with keeping the brembo in reserve for the short term. If FCP didn't exist, it would be a no brainer-- I'd be back to the Brembos immediately. But, with FCP math... a different set of pads every event actually isn't worse, per se... since I'm swapping between streets and tracks either way (so it's not even more work). It just feels a little abusive of their warranty...

I don't know, not super stoked-- I was hoping they'd do better, especially given my massive amount of ducting and 10% lighter than stock car.

Rotors (ZCP/CSL) didn't form any microcracks, so that's good.

[heinzboehmer]

Ah that kinda sucks. But also sounds like an interesting thing to mess around with. Might give disassembling the E9x code a shot sometime.

[terra]

Cool yeah that's what I thought. Any idea on the complexity of the coding? Might be fun to experiment with and without on track if flashing the thing is easy enough.

The people who know how to do it are keeping quiet. Presumably using some sort of undocumented function. From what I have heard, there's no evidence that the modules are physically cracked open (though I have never physically seen one myself to say for sure), so presumably the flashing is possible over K-line or CAN. Perhaps using some built in "boot mode" rather than the BMW communications protocols. Thus far I have not figured out any method to dump software, let alone reflash these things. There may well be no method to dump software - I think it's a (former?) continental engineer doing the flashes, so they probably had access to the original binaries without having to dump anything.

E9x generation MK60 modules are flashable via WinKFP so I thought that might be a good starting point to learn how to hack these things... but I can't figure out what kind of CPU the code belongs to to even disassemble the software. It's something made by Motorola/Freescale, but it doesn't appear to be ARM, PPC, or HCS12. Not sure what else to try

[Obioban]

Cool yeah that's what I thought. Any idea on the complexity of the coding? Might be fun to experiment with and without on track if flashing the thing is easy enough.

So far you have to pay someone to do it-- there's no DIY option. And it's pricey, from what I've heard... ~$1000. So, probably nobody will be doing it just to mess around with it and then flash back to stock for street use...

[Obioban]

I've been looking for this part for a while. I actually installed and wired in the switch back when I was doing my weight saving stereo project.

photo I took in July 2018:



And from the day I installed the seats:



And when I swapped to a full alcantara steering wheel you can just see it peaking out from behind:

[heinzboehmer]

The 813.3 and 817.3 DSC (this one) modules can be flashed with the MotorSport software— which was BMW’s race car abs. But, you lose all DSC doing so, and my car sees (lots of) street use— so I won’t be doing that.

Cool yeah that's what I thought. Any idea on the complexity of the coding? Might be fun to experiment with and without on track if flashing the thing is easy enough.

[Obioban]

Is that easy to code?

No coding needed-- it's what the module expects, as it's what the steering wheel button on the ZCP/CSL does. I just don't want to do that, as I very much like having the steering wheel controls.

This will be very cool!!! Wiring required?

You need to run one wire from the stalk to the mk60. It just needs a momentary ground— which is what this switch provides.

Isn't this version of the module also flashable with some"race" firmware? I remember reading something like that on some Porsche forum. Or maybe the "race" firmware is really just the ZCP ABS.

The 813.3 and 817.3 DSC (this one) modules can be flashed with the Motorsport software— which was BMW’s race car ABS. But, you lose all DSC doing so, and my car sees (lots of) street use— so I won’t be doing that.

[heinzboehmer]

817.3 DSC module— the zcp/csl module. More track focused/racey ABS and allows separate buttons for DSC and M track mode (so I can quickly turn off dsc again).

Isn't this version of the module also flashable with some"race" firmware? I remember reading something like that on some Porsche forum. Or maybe the "race" firmware is really just the ZCP ABS.

[maupineda]

I have an e39 washer stalk installed that has an “S” button on the end (where the BC button is on the turn signal stalk). On the e39 it’s used for high intensity wash. I’ll be using it for M Track Mode.

This will be very cool!!! Wiring required?

[SteelGreyM]

I have an e39 washer stalk installed that has an “S” button on the end (where the BC button is on the turn signal stalk). On the e39 it’s used for high intensity wash. I’ll be using it for M Track Mode.

Is that easy to code?

[Obioban]

That’s a thing?! So what buttons will you be using now to activate/deactivate those?

I have an e39 washer stalk installed that has an “S” button on the end (where the BC button is on the turn signal stalk). On the e39 it’s used for high intensity wash. I’ll be using it for M Track Mode.

[SteelGreyM]

817.3 DSC module— the zcp/csl module. More track focused/racey ABS and allows separate buttons for DSC and M track mode (so I can quickly turn off dsc again).

That’s a thing?! So what buttons will you be using now to activate/deactivate those?

[Tbonem3]

Lol of course!

I just saw a set of H&R sport springs for sale by member Ramo/S54.m3 and you can see the coils wound more closely together at the top vs. bottom which would indicate "progressive" to me. Though that's the lowering springs, I'm not sure how different their coilover springs are, if they're different.

[Obioban]

So FCM says they're linear, but the manufacturer says progressive?

The manufacturer has said they’re linear and said they’re progressive, depending who they’re talking to. They told me linear 🙄