[eugenebmw]

Originally Posted by Needsdecaf

Is the CDV's function to actually protect the clutch from aggressive engagement? Or it simply a mis-placed attempt (as many things are) to "smooth things out"?

Or do we not know for sure?

I may be wrong. The CDV, from my understanding, is a valve that limits how much hydraulic fluid is allowed through to engage/release the actual clutch. So that means if I dump the clutch, the clutch wont actually "dump", but rather release very quickly, even though the pedal has been released. SO, removing the valve gives you direct control with the clutch pedal.

If you know I mean many years of experience of driving manual. Removing the CDV is the way to go if you want the car to do exactly what you make it do.

[fanofbmwe46]

Originally Posted by eugenebmw

I may be wrong. The CDV, from my understanding, is a valve that limits how much hydraulic fluid is allowed through to engage/release the actual clutch. So that means if I dump the clutch, the clutch wont actually "dump", but rather release very quickly, even though the pedal has been released. SO, removing the valve gives you direct control with the clutch pedal.

If you know I mean many years of experience of driving manual. Removing the CDV is the way to go if you want the car to do exactly what you make it do.

This makes sense!

[rcz22]

Originally Posted by Adcampo

I’ve read somewhere that ‘23 and ‘24 manuals don’t have the CDV. Can anyone confirm?

I just had this done last week on my '24 - the CDV was there, and I do feel a difference after the removal - well worth it.

[Adcampo]

Originally Posted by rcz22

I just had this done last week on my '24 - the CDV was there, and I do feel a difference after the removal - well worth it.

Thanks for the heads up. Did you have a mechanic do it?

[rcz22]

Originally Posted by Adcampo

Thanks for the heads up. Did you have a mechanic do it?

Yes I was at the shop having a bunch of things done (mad mid pipe/project gamma grill and front mounted intakes) and asked to have the CDV removed at the same time.

[Adcampo]

Originally Posted by rcz22

Yes I was at the shop having a bunch of things done (mad mid pipe/project gamma grill and front mounted intakes) and asked to have the CDV removed at the same time.

Cool. Any specifics on how you feel it improved things?

[rcz22]

Originally Posted by Adcampo

Cool. Any specifics on how you feel it improved things?

like a few have said maybe some of this is in my head, but I really think 1->2 is much smoother (even around 3-4k rpm), and prior I felt like going 4->3 was tougher (for lack of a better word) - and now rowing through all gears is smoother.

[Adcampo]

Just had this done. Feels good so far. I’ll report back once I have a bit more drive time.

[Adcampo]

Ripped a few holeshots and definitely notice an improvement. Subtle overall change, but certainly worth it.

[Ravenseal]

Originally Posted by Adcampo

Ripped a few holeshots and definitely notice an improvement. Subtle overall change, but certainly worth it.

Debating doing this on my G87, but not many people have done it on the M2 yet. Appreciate the feedback on this thread.

[AhsanU]

Originally Posted by Ravenseal

Debating doing this on my G87, but not many people have done it on the M2 yet. Appreciate the feedback on this thread.

The G87 has the same S58 in it and I'm betting the same procedure to remove the CDV. There's no reason to not consider it because you have a G87 vs. a G80/G82.

If you enjoy banging through gears, then it's a no brainer. The clutch, iirc, feels a little bit lighter after installation, but it's one of those mods I'd do again in a heartbeat.

[G80indy]

I did it in my e46. noticed change.
the G80 stock is fine. not going to do this mod. I'm never shifting that fast to grind anyway...

[bl732]

Thinking of the CDV delete in my new G82. The rev hang has been a bit frustrating.

Is it safe to assume the CDV delete is fine during the break-in period? I'm about 550 miles in. Having the CDV affords some level of protection as I get used to the car I suppose, but that 1-2 delay is my one and only complaint thus far, so the sooner I can be rid of it (or minimize it), the better.

[rcz22]

Originally Posted by bl732

Thinking of the CDV delete in my new G82. The rev hang has been a bit frustrating.

Is it safe to assume the CDV delete is fine during the break-in period? I'm about 550 miles in. Having the CDV affords some level of protection as I get used to the car I suppose, but that 1-2 delay is my one and only complaint thus far, so the sooner I can be rid of it (or minimize it), the better.

just personal preference I waited to do any mods until after the break-in - but I imagine there is little risk doing it prior.

[bl732]

Originally Posted by rcz22

just personal preference I waited to do any mods until after the break-in - but I imagine there is little risk doing it prior.

Thanks, I think I'll likely do the same. Just feels so far, I'm about halfway through!

[Gizmo 335i]

Originally Posted by bl732

Thanks, I think I'll likely do the same. Just feels so far, I'm about halfway through!

I deleted mine the first week I owned it. Had less than 20 miles on it at the time. No issues now either.