[Geighty7]

Hello,

I have not found the answer I am looking for. Right now, I’m looking to improve my 6MT shift feeling. Don’t get me wrong, it’s good…but not great. Initially I was going to opt in for the short throw shifter from Rogue, but upon research, the install is very intrusive. I hear some news about vibrations as well from it.

Has anyone done a CDV delete? What are your experiences if so? I’m looking for pros/cons on this, as well as any help in improving my shifting experience.

I drive pretty smooth normally, but when I get on it WOT dumping clutch, I see where the shifts can improve.

Seems a bit sloppy, and some lag between clutch coming back to your foot and engaging another gear + gas in. I know this experience can improve, I just want to take the minimalist approach before I just opt in for rogue or CAE shifter.

Thanks!

[DSTR]

I see this situation on other forums and around this one. Yet this debate continues but those semi-pro/pro drivers take these cars out and set superb lap times with the CDV in place correct?

[Geighty7]

Originally Posted by DSTR

I see this situation on other forums and around this one. Yet this debate continues but those semi-pro/pro drivers take these cars out and set superb lap times with the CDV in place correct?

I’m assuming that’s the case. In my case, I’m just looking for an elevated driving experience. I am hoping this brings a rawness to shifting. I scheduled my appt for Thursday to just do it. Would love feedback still before.

[m20e3087]

It made a huge difference in feel with the delete and short shift kit in the F8X, but not sure about G8X.

[Click_ID]

As someone who has the following done (I offer these insights);
Rogue SSK
CDV deleted
PTB racing clutch
BMS clutch stop

Rogue SSK really helped the reduce the "slack" and tightened things up. (Mainly the upgraded rear carrier mount that gets ride of the rubber bushings)
I'll be switching to one from "Auto Solutions" as it has more of a "pop" feel when it gets into the gears, where the Rogue almost feels too raw.

CDV: one of my favorite mods for going WOT. My clutch no longer gives me that massive delay where I felt like I was waiting for my clutch pedal to "load".

In addition to the CDV I added a clutch stop, as the last 1.2-2.5cm's of throw don't do anything, this mod takes out that "delay" you're feeling.

Upgraded the clutch, a bit firmer pedal feel. Most importantly my car can now take the upgraded power.

Let me know if you have any questions, happy to help.

[Geighty7]

Originally Posted by Click_ID

As someone who has the following done (I offer these insights);
Rogue SSK
CDV deleted
PTB racing clutch
BMS clutch stop

Rogue SSK really helped the reduce the "slack" and tightened things up. (Mainly the upgraded rear carrier mount that gets ride of the rubber bushings)
I'll be switching to one from "Auto Solutions" as it has more of a "pop" feel when it gets into the gears, where the Rogue almost feels too raw.

CDV: one of my favorite mods for going WOT. My clutch no longer gives me that massive delay where I felt like I was waiting for my clutch pedal to "load".

In addition to the CDV I added a clutch stop, as the last 1.2-2.5cm's of throw don't do anything, this mod takes out that "delay" you're feeling.

Upgraded the clutch, a bit firmer pedal feel. Most importantly my car can now take the upgraded power.

Let me know if you have any questions, happy to help.

Super helpful feedback on this, thanks! I’ll likely then do the CDV and clutch stop as well. My goal is to get a new short throw in there, I will check out Auto Solutions now that you mention it vs your Rogue feedback.

Thanks again!

[Montaver]

Auto solutions are great, you can really customize to whatever you want. I had one on my 2020 M2C with 20% reduction and the softest bushings. I'd probably go 15% here as I prefer a slightly longer throw. For the CDV delete are you replacing it with a specific part?

[Geighty7]

Originally Posted by Montaver

Auto solutions are great, you can really customize to whatever you want. I had one on my 2020 M2C with 20% reduction and the softest bushings. I'd probably go 15% here as I prefer a slightly longer throw. For the CDV delete are you replacing it with a specific part?

No, the plan was to just do the CDV and see if that improves the responsiveness of the shift during WOT.

[Montaver]

Originally Posted by Geighty7

No, the plan was to just do the CDV and see if that improves the responsiveness of the shift during WOT.

In the past the CDV is deleted by replacing it with another OEM BMW part from an older generation, which I cannot recall. If your doing s CDV delete you need to put something there in place, unless something has changed on the G8x.

[Geighty7]

Originally Posted by Montaver

In the past the CDV is deleted by replacing it with another OEM BMW part from an older generation, which I cannot recall. If your doing s CDV delete you need to put something there in place, unless something has changed on the G8x.

If I’m not mistaken I think it’s changed. The CDV just comes right out and I guess you have to bleed the lines as well.

I have a BMS clutch stop I ordered a long time ago (5 months) that I never threw on. I guess it’s time is now!

[chris719]

My experience with CDV delete is only on my Z4M because I did not do it to my F87 comp. Anyway, it was most evident for me modulating the clutch from a dead stop and in reverse, it just lets you close the feedback loop a bit more easily and modulate it more accurately. It didn't really have a big effect on shifting once moving in my opinion. I would recommend it, but wouldn't say it was a life changing modification. I know what you mean about the shifting at WOT, because even before the CDV delete my Z4M engaged a lot more crisply than my F87. I can't say if a more restrictive CDV is the reason or it's the design of the clutch, pressure plate, etc.

[Geighty7]

Originally Posted by chris719

My experience with CDV delete is only on my Z4M because I did not do it to my F87 comp. Anyway, it was most evident for me modulating the clutch from a dead stop and in reverse, it just lets you close the feedback loop a bit more easily and modulate it more accurately. It didn't really have a big effect on shifting once moving in my opinion. I would recommend it, but wouldn't say it was a life changing modification. I know what you mean about the shifting at WOT, because even before the CDV delete my Z4M engaged a lot more crisply than my F87. I can't say if a more restrictive CDV is the reason or it's the design of the clutch, pressure plate, etc.

I have it scheduled for Thursday, so I suppose why not. If it can only help than I’m for it.

[sacowich]

Timely posts.
Car in the shop for Rogue SSK.
I’ll have them delete the CDV. Totally forgot about this gizmo.

[Geighty7]

Originally Posted by sacowich

Timely posts.
Car in the shop for Rogue SSK.
I’ll have them delete the CDV. Totally forgot about this gizmo.

Plz give feedback after you get back and take her for a few spins

[Resoelg]

Originally Posted by Geighty7

I have it scheduled for Thursday, so I suppose why not. If it can only help than I’m for it.

Would like to hear your feedback when it's finished and you get time to assess.

[abrandonment]

Following. Ordered the clutch stop and just realized it never came.

[sacowich]

Originally Posted by Resoelg

Would like to hear your feedback when it's finished and you get time to assess.

Just got the car back. Only 15 mi drive to work.
Had Rogue SSK installed and CDV deleted.
It’s an extreme change but kinda spectacular. Will need more time to assess as I’m still trying to push the lever too much.

It’s significantly shorter throw and super crisp/notchy. Very little play. Even left/right movement takes more effort. There’s even slight audible click. Wish I could convey better here.

The CDV part I’ll need to try more aggressive driving later tonight. It’s definitely different as my release in 1st was a bit off the whole drive. Less leeway for sure. I’m a lifelong MT driver so I’ll figure it out quickly, but clutch release is different.

https://www.instagram.com/stories/ts...Q1ZGUxMzBkMA==

[Graflex]

I just ordered a cae shifter a few days ago https://cae-racing.de/CAE-Ultra-Shifter_4691

[Dingakasteve]

I did just a CDV delete, it is just removing a small valve from inside the connector, much like the F8x cars. I’ve had many BMWs and always do this, it just feels much more natural.

[BroDoze]

@Dingakasteve How long did it take you? ^^ Lift? Jackstands?

Any comments on the G87 specifically?

[daddyjaxx]

Could you explain in more detail how you did it?

[Dingakasteve]

Originally Posted by BroDoze

@Dingakasteve How long did it take you? ^^ Lift? Jackstands?

Any comments on the G87 specifically?

I have a lift because I’m old and don’t like laying on the ground, but it could easily be done on Jackstands. But with the lift I sat in my chair sipped my coffee and completed the job in 45 mins. Wife ran the clutch pedal while I bled the lines.

I’ll post a link how to do it, but it’s very easy, pinch the clutch line at the secondary, pull the clutch line from the secondary, take a small wood screw and insert it into the secondary where the line was, thread it into the rubber washer and the metal valve, pull out. Reconnect line, release the vice grip pinching the line, bleed system, party.

Pulling the valve was a bit tricky but after a few tries it came right out.

I’ve done this on a few e36s, my zhp, e90 and now this car, and it just makes it more natural, coming from my 1LE it was 100% needed for me.

https://f87.bimmerpost.com/forums/sh...1#post24926592