OE ZCP Suspension Info

spazzyfry123 wrote

So what about non-EDC + non-ZCP cars? Would a ZCP spring + non-EDC strut/shock combo be advisable?

spazzyfry123 wrote

So what about non-EDC + non-ZCP cars? Would a ZCP spring + non-EDC strut/shock combo be advisable?

derbo wrote

Find a stock 1M suspension? Those are fixed "ZCP" suspension.

CSBM5 wrote

That's what Richbot is running, and I asked him about it a few posts up above in this thread. Seems to be fine as the ZCP spring rate is either unchanged or very similar.

spazzyfry123 wrote

derbo wrote

Find a stock 1M suspension? Those are fixed "ZCP" suspension.

CSBM5 wrote

That's what Richbot is running, and I asked him about it a few posts up above in this thread. Seems to be fine as the ZCP spring rate is either unchanged or very similar.

So it would be fine to run non-EDC E90 M3 struts/shocks with E90 M3 ZCP springs? I wouldn't mind doing that to my car.

I'll either go with that or the H&R + cut E36 bumpstop route.

BOOF-M3 wrote

Or you could add ZCP shocks, struts and springs and I know a guy who knows a guy with a set for sale who will give YOU a great deal on it.

Richbot wrote

Yep. It's fine, to the extent the stock Sachs dampers are any good, and they are, or at least I think the struts are. Not as big a fan of the shocks, I just swapped the shocks out for B8's in back and it was an improvement.

I like the stock bumpstops but I think I am going to shave them a bit next time I have my front struts apart to replace them. I'm sure the ancient ones on the car now are already hammered.

BOOF-M3 wrote

Or you could add ZCP shocks, struts and springs and I know a guy who knows a guy with a set for sale who will give YOU a great deal on it.

heh

Unless your guy has all the wiring, EDC modules, etc., and codes for free, I don't think it'd be such a great deal to add it to a non-EDC car which I think spazz's is

Richbot

Richbot wrote

Are you trying to ruin his stripper status

tdott wrote

Always wondered if anyone tried to program ZCP EDC on a non-zcp EDC car.

tdott wrote

Always wondered if anyone tried to program ZCP EDC on a non-zcp EDC car.

SYT_Shadow wrote

oh yeah, can be done without issue

But you need EDC to start with

tdott wrote

Sorry I wasn't clear.
I meant code the ZCP EDC shock profile, but with normal EDC shocks?
Since the part numbers are different I assume the non-zcp edc shocks/struts are different, but would they work with the zcp edc coding?

tdott wrote

SYT_Shadow wrote

oh yeah, can be done without issue

But you need EDC to start with

Sorry I wasn't clear.
I meant code the ZCP EDC shock profile, but with normal EDC shocks?
Since the part numbers are different I assume the non-zcp edc shocks/struts are different, but would they work with the zcp edc coding?

SYT_Shadow wrote

Then you'd have the profile but not the ride height

tdott wrote

Yea exactly, you'd have the dynamic sport profile. Since it's mostly software that controls that I was wondering if it works.

derbo wrote  

# Competition Package EDC
The Competition Package Electronic Damping Control has revise settings compared to the standard EDC from the M3. There is mainly two differences that has been noted online.

1. 10mm shorter springs on the ZCP.
2. Revised Sport Mode to enable variable dampening instead of static 75% stiffness.

In addition, the control of the electronic damper adjustment function EDC includes a Sport mode specially developed for the Competition Package. It is said to adjust the chassis modifications by means of map-based control and the driving stability control function DSC.

##Goal
I originally wanted a ZCP M3 cause those Style 359 rims are the best rims BMW makes. The Suspension had a slight difference that probably would've made me keep the car stock in that aspect. However since rims are just rims and I read on forums of people successfully coding in their EDC to ZCP EDC, I decided to start hunting how to do this. Forums were somewhat unhelpful as most of the folks who knew offer paid services to do it.

Code my standard EDC into ZCP EDC and document it somewhere online.
The DSC portion of the ZCP package I believe is just Euro MDM. Euro MDM allows more slip angle than the US MDM. Nuff Said.

That is coded into the MK60_M3.Cxx with the follow parameters:

US_VEHICLE    Nicht_aktiv

MDYNAMIC_MODE_USA    Nicht_aktiv

M3_UEBERSTUEUERN_MUE_0    wert_00

M3_UEBERSTUEUERN_MUE_1_2    wert_00

### The Research
With the help of NCSDummy, I opened up the DATEN File for EDCK65.C1A to see input values and their corresponding data values.

Short description:
dx9023 = Non-ZCP E90 with EDC
dx9030 = ZCP E90 (EDC is standard)





As shown above, the options row shows the requirements to meet in order to use that value as default. An exclamation mark means negate in this situation. The Data row is the output to the module and in this parameter, they are identical. This means this parameter doesn't care if you are a ZCP or non-ZCP, you are getting this value no matter what.

However, in the below one they are different data values of C8 and A0. What these actual values mean is beyond me. However, this helps conclude my research to a specific finding.





### Proposed coding

Code every parameter to dx09030 should apply all the values from a ZCP to my EDC module. I suppose you don't have to do every parameter as some of them offer the same data value but it is faster(lazier) to just code dx09030 all the way through.

I'm pretty sure this will work as most people suggest feeling revised settings after coding in the ZCP values. However since they either didn't know what they were coding or someone did it for them, I am not 100% sure this will work. (99% maybe.)

derbo wrote

Yup! The change is here as I listed in my older post in my journal:

BOOF-M3 wrote

Take a non ZCP EDC shock and code for ZCP? Highly doubtful, it is a different shock altogether.

tdott wrote

That was my thinking, but if it's only software, then I figured it might work, because the regular edc has a dynamic normal or comfort profile, just a static sport profile, so a software change should allow a dynamic sport profile. The valving might be different, but atleast how it adjusts could still worked.

While it's going to be hard to compare the actual effect it had, atleast it sounds like a few people have tried it,

SYT_Shadow wrote

In a couple months I'll be able to do back to back comparisons of the oem zcp + gc camber plates vs bilstein b12 non edc + gc camber plates

Very curious about the handling difference between both

EricSMG wrote

Great thread, right up my alley.

To be honest, I'm just not a fan of the standard EDC shock valving. I think comfort is a bit choppy over small/quick rollers and quite harsh over sharp edges (like a deep manhole cover). BUT - it's a bit too floaty at higher speeds. Normal mode is too stiff for city use and Sport is simply useless in my world 99% of the time.

What I want is plush control, like the B12k it gave me on the 46M. I've considered the Dinan springs/kit but that leaves me with the same EDC dampers which I don't really like. I've also considered the ZCP springs for that subtle drop (purely looks) but again..... the dampers are my problem. I've considered the Ohlins RT but I wasn't a fan of those on the 46M.

So, like you, Danny, I'm really considering the B12 kit for this car. Have you personally run/tried this kit? How does it feel compared to a 30k mile bone stock non-ZCP EDC car?

How about the Billy EDC dampers + ZCP/Dinan/Eibachs springs? Anyone try that setup?