CS Suspension Coding

[matty088]

Originally Posted by Nativetexan

I am looking to make my stock '18 ZCP a bit more comfortable for DDing.

Been thinking about switching from 666m's to 513m's.

Now I'm wondering if doing the CS coding could a bit more comfort…

If the CS coding os even more comfortable when in Comfort mode from stock, then I'd imagine I'd be okay with actually using Sport Plus…Personally I rarely ever drive outside Comfort on the suspension, sometimes in Sport.

Any advice or guidance would be greatly appreciated.

Cs coding is without a doubt softer than zcp. It has more roll.

That’s not to say you cant get better lap times with Cs. But on the road it’s a softer tune for sure.

[Nativetexan]

Originally Posted by hellokitty

I think the CS coding is less harsh than ZCP coding because rebound is greatly improved. Try it out and see if it helps.

It definitely took some harshness out.

I agree with a prior post that says Comfort is now one step softer than before.

Well worth the cost to have Alex code it. Plus he turned off Active Sound and and turned on “one button push turn off and door unlock” 🙌🏼

[JD1100]

Originally Posted by Nativetexan

It definitely took some harshness out.

I agree with a prior post that says Comfort is now one step softer than before.

Well worth the cost to have Alex code it. Plus he turned off Active Sound and and turned on “one button push turn off and door unlock” 🙌🏼

What does “one button push turn off and door unlock” mean?


Does anyone have experience with swapping in a base front swaybar into a ZCP and coding EDC to CS ? This is what I am planning on doing.

I am aiming for CS suspension setup. (having ZCP rear swaybar and base M4 front swaybar and CS coded dampers)

[CanAutM3]

Originally Posted by JD1100

What does “one button push turn off and door unlock” mean?

"One button push turn off" is a coding feature that turns off the MMI when the ignition is turned off instead of waiting for a second press or the when the door is opened.

Door unlock is a coding feature that automatically unlocks the doors when shutting down the engine when "locking uppon driving off" is activated in iDrive.

Originally Posted by JD1100

Does anyone have experience with swapping in a base front swaybar into a ZCP and coding EDC to CS ? This is what I am planning on doing.

I am aiming for CS suspension setup. (having ZCP rear swaybar and base M4 front swaybar and CS coded dampers)

What you intend in doing is exactly what needs to be done to maximize the CS EDC coding. Ideally you'd also want to run the 19"/20" wheel setup, but the front swaybar is the most important. My M4cs had much more neutral handling with less understeer due to the lower front roll stiffeness while turn-in was sharper from the damper tuning.

[JD1100]

Originally Posted by CanAutM3

"One button push turn off" is a coding feature that turns off the MMI when the ignition is turned off instead of waiting for a second press or the when the door is opened.

Door unlock is a coding feature that automatically unlocks the doors when shutting down the engine when "locking uppon driving off" is activated in iDrive.

What you intend in doing is exactly what needs to be done to maximize the CS EDC coding. Ideally you'd also want to run the 19"/20" wheel setup, but the front swaybar is the most important. My M4cs had much more neutral handling with less understeer due to the lower front roll stiffeness while turn-in was sharper from the damper tuning.

CanAutM3 thanks for the explanation on the push button turnoff.

Regarding the EDC coding; I do have a 19" front and 20" rear setup now. running 265/35/19 front and 285/30/20 rear. I was considering getting adjustable swaybar end links front and rear to eliminate swaybar preload. I am lowered with KW HAS.

[CanAutM3]

Originally Posted by JD1100

CanAutM3 thanks for the explanation on the push button turnoff.

Regarding the EDC coding; I do have a 19" front and 20" rear setup now. running 265/35/19 front and 285/30/20 rear. I was considering getting adjustable swaybar end links front and rear to eliminate swaybar preload. I am lowered with KW HAS.

Then you'll have close to the ideal setup. The KW HAS spring rates might be a little high for the ideal pairing with the CS EDC coding but close enough. There should be any need for the adjustable end links, unless you are slammed to the ground (which is not ideal performance wise anyhow).

[JD1100]

Originally Posted by CanAutM3

Then you'll have close to the ideal setup. The KW HAS spring rates might be a little high for the ideal pairing with the CS EDC coding but close enough. There should be any need for the adjustable end links, unless you are slammed to the ground (which is not ideal performance wise anyhow).

@CanAutM3 Thanks for the info. Interesting, you dont think end links are needed. I wasn't sure if there were going to be needed, I'm not set too low on the KW HAS.

I have a very reasonable ride height because I didn't want to give up performance. I don't really hear people discussing the pre-load on sway bars...so I wasn't sure if this was something that needed attention.

[Nativetexan]

Originally Posted by JD1100

What does “one button push turn off and door unlock” mean?


Does anyone have experience with swapping in a base front swaybar into a ZCP and coding EDC to CS ? This is what I am planning on doing.

I am aiming for CS suspension setup. (having ZCP rear swaybar and base M4 front swaybar and CS coded dampers)

Not having to push the start/stop button twice to fully shut down the car is nice.

And when the car shuts down, having doors Auto Unlock is really nice. You don't have to pull the door handle once to unlock, and then again to open the door.

It's the little things : )

[VeloF1]

Originally Posted by JD1100

@CanAutM3 Thanks for the info. Interesting, you dont think end links are needed. I wasn't sure if there were going to be needed, I'm not set too low on the KW HAS.

I have a very reasonable ride height because I didn't want to give up performance. I don't really hear people discussing the pre-load on sway bars...so I wasn't sure if this was something that needed attention.

I’ve base model 2015. MP HAS. I coded both CS and Comp EDC. CS worked much better for street and track. I think the CS front sway bar is same as my base. I run either 19 or 18 inch wheels.

[S2000_Europe]

What about alignment specs fir the M CS?. Is the same as ZCP ( same a base model)?

[slaughter.mode]

I just had CS coding done today and paired with the Bilstein Damptronics it's a night & day difference that I should have done when I had these coilovers installed. Thanks kubax86 for setting me up! The ride quality for the road has improved dramatically and although it is softer for sure the Bilstein's stiff characteristics in S+ mode are still decent enough for a weekend canyon run or a light track day for sure.

[KJKelly]

Interesting thread. I have a stock 2018 Comp and was wondering how you go about getting the CS coding. I am located in Northern California.

[hellokitty]

Originally Posted by KJKelly

Interesting thread. I have a stock 2018 Comp and was wondering how you go about getting the CS coding. I am located in Northern California.

@kubax86 can code it for you remotely

[Maryan425]

FWIW, I just reverted my CS EDC to normal EDC via kubax86 today. I initially did a full GTS coding with the added CS EDC to try it out. I have a non-zcp car with M-performance suspension and no other upgrades. Drove with the CS coding for about a week and the dampening seemed completely off and the car felt way too stiff/bouncy. Also, I had some suspension ambiguity during straight line pulls and long sweeping turns at higher speeds. Did a better writeup/explanation on this thread about the EDC and other components: https://f80.bimmerpost.com/forums/sh...1843973&page=6

I'm sure for people who have ZCP cars with the optimized components for the coding it would be a great upgrade but it just did not feel right on a base car in my opinion.

[vrptstyly]

I've read a lot of talk about the CS coding making things more comfortable. What about the other end at sport+? Does this make every setting "softer" or does it widen the range of what comfort to sport+ covers? Comfort being softer and sport+ stiffer?

[FrozenGT]

I have 2020 M4 HE. Per BMW the car comes with revised suspension for the HE trim. I am 100% stock and car feels amazing. Can someone confirm if the HE and CS are the same?

[maddmatth]

Originally Posted by FrozenGT

I have 2020 M4 HE. Per BMW the car comes with revised suspension for the HE trim. I am 100% stock and car feels amazing. Can someone confirm if the HE and CS are the same?

No. Heritage Edition is the Competition Pack with some extra cosmetics. Not CS.
Comp pack has the same dampers as CS though so you could get CS suspension coding if desired.

[njavier03]

new to the platform, so i'm reviving an old thread

can anyone confirm if the CS EDC coding just softens the dampening on ZCP suspension or are there any other benefits to the different dampening settings? i believe it was asked here before, but there wasnt a direct answer.

also, is Alex, kubax86 aka bimmer-remote?

[RugbyBro]

Originally Posted by njavier03

new to the platform, so i'm reviving an old thread

can anyone confirm if the CS EDC coding just softens the dampening on ZCP suspension or are there any other benefits to the different dampening settings? i believe it was asked here before, but there wasnt a direct answer.

also, is Alex, kubax86 aka bimmer-remote?

Softening is the primary "feel" benefit and it is the result of much better rebound and compression tuning. Those two factors result in a primary and noticeable performance benefit - soaks up the road and maintains tire contact to the ground over imperfect surfaces so you can go faster with more confidence more of the time. There is one caveat:

CS tune has increased roll damping in the front because the CS uses the non-ZCP front sway bar. You can tune a ZCP and get the ride comfort benefits of CS, and this won't really matter on the street, but you will have more understeer because of the stiffer ZCP front sway. CS is all about softening the front to promote front end grip and turn in.

Alex is @ AlpineMSS and Kubax86 is @ Bimmer-remote; two different people.

[njavier03]

Originally Posted by RugbyBro

Softening is the primary "feel" benefit and it is the result of much better rebound and compression tuning. Those two factors result in a primary and noticeable performance benefit - soaks up the road and maintains tire contact to the ground over imperfect surfaces so you can go faster with more confidence more of the time. There is one caveat:

CS tune has increased roll damping in the front because the CS uses the non-ZCP front sway bar. You can tune a ZCP and get the ride comfort benefits of CS, and this won't really matter on the street, but you will have more understeer because of the stiffer ZCP front sway. CS is all about softening the front to promote front end grip and turn in.

Alex is @ AlpineMSS and Kubax86 is @ Bimmer-remote; two different people.

thank you, i appreciate the info and clarity. seems like i need to hit up Alex soon!

[Marioec]

Let me get this right, To get the full benefit of the CS EDC coding on a ZCP you will need to get non-ZCP front Sway bar with stock rear ZCP Sway bar Correct ?

What happens if I want to go with the MP HAS KIT in the future assuming I have the CS EDC on my ZCP running stock front and rear sway bar should i still go with the front non- ZCP Sway bar ?