[e90yyc]

Costs way too much and didn’t even notice a difference.

Will be posting my CDV delete in classifieds if anyone wants to make me an offer.

[Soden82]

Isn't it only $30 for the upgraded one?

[e90yyc]

Lol didn’t realize people replaced their CDVs with less restrictive ones!

I was just being a jackass. I actually have a CDV delete myself. Unfortunately I have no reference point because I’ve never driven it with CDV installed, but from what I hear it’s worthwhile.

[NiBe]

LOL

[cooperolson]

You can do it for free, just remove the cdv fully and connect the clutch line to where it connects to the next line where the cdv was. Its the same connection so no point in buying the $30 part

[bmw335ie90]

The clutch delay valve restricts fluid flow when dumping the clutch quickly. When the clutch is slowly disengaged, fluid flow is so low that the CDV is not a restriction at all.

People that say there that during every day driving there is a massive difference after removal are exaggerating the effects, and people saying there is literally no difference at all obviously don't ever dump the clutch/do hard launches. Everyone seems to speak in hyperbole for some weird reason.

[eljay]

Oh boy!

While you're at it, just put this next to the title: the best oil is...

[e90yyc]

Originally Posted by bmw335ie90

…Everyone seems to speak in hyperbole for some weird reason.

Welcome to 2022 sir. Your table is right here.

(Totally agree. As mentioned I have no reference point because I deleted from day 1, but all this talk about it does make me curious. Maybe I’ll reinstall it…)

[tadaska]

Originally Posted by bmw335ie90

The clutch delay valve restricts fluid flow when dumping the clutch quickly. When the clutch is slowly disengaged, fluid flow is so low that the CDV is not a restriction at all.

People that say there that during every day driving there is a massive difference after removal are exaggerating the effects, and people saying there is literally no difference at all obviously don't ever dump the clutch/do hard launches. Everyone seems to speak in hyperbole for some weird reason.

Not all people are the same. Some people know if it's clear to pull out before they even reached the junction and some need to stop and look left or right. Same with the CDV delete, some people just can't observe the difference. Doesn't mean it's not there.

[Torgus]

Originally Posted by cooperolson

You can do it for free, just remove the cdv fully and connect the clutch line to where it connects to the next line where the cdv was. Its the same connection so no point in buying the $30 part

This.

You don't notice it if you are granny shifting. Dumping the clutch, driving wot, smashing through gears, etc. Very noticeable.

Why would anyone want a valve to slow the engagement of their clutch? I need that shit to clamp down the second my foot tells it to so I don't smoke the clutch. If I want to slip the clutch in I do that with my foot not a valve.

If you don't think it works, physics. If you don't notice it, go along with your day

[krhodes1]

Originally Posted by cooperolson

You can do it for free, just remove the cdv fully and connect the clutch line to where it connects to the next line where the cdv was. Its the same connection so no point in buying the $30 part

You can also just knock the restrictor out of the housing with an appropriately sized Phillips screwdriver and a couple light taps with a hammer, then put it back together properly.

[Captain Buumer]

From experience: with CDV installed, it was ~20% of times not smooth & slightly jerky until clutch engaged. It kinda forces to let go clutch slower to get smooth going and this is mostly affecting gears 1 & 2.

It was easier to begin driving from stop with Opel Movano & VW transporter compared to BMW with CDV installed.

Then again my uncle daughter had E91 MT and she didn't notice CDV existance.
I did let her try my E90: short shifter + CDV delete and she did say that it is slightly easier to shift compared to her E91 but pretty much the same.

I think CDV existance doesn't affect drivers that ride the clutch (because she did). And this could be reason why some notice it and others say it doesn't have any affect.

[e90yyc]

I can’t tell how many people here thought I was being serious—LOL—but there’s some good info nonetheless.

[Torgus]

Originally Posted by e90yyc

I can’t tell how many people here thought I was being serious—LOL—but there’s some good info nonetheless.

We're just air conditioners, walking around this planet, screwing each others brains out anyways. I don't see why CDVs matter.

[david in germany]

Originally Posted by krhodes1

You can also just knock the restrictor out of the housing with an appropriately sized Phillips screwdriver and a couple light taps with a hammer, then put it back together properly.

Twice the work of just removing it.

[krhodes1]

Originally Posted by david in germany

Twice the work of just removing it.

It takes ~10 seconds to do, and keeps the lines routed as BMW intended. And while irrelevant now, my car was under warranty when I removed the restrictor, so not having anything seem out of the ordinary mattered.

But you do you.

[e90yyc]

Originally Posted by Efthreeoh

I have to ask.

If the CDV delete makes such a drastic difference in clutch manipulation as several Posters on the Forum say it does, wouldn't the experienced foot of a BMW technician trained to repair BMW automobiles instantly feel the missing innards of the CDV and void your warranty?

Admins: Close this thread. This shit is OVER.

[krhodes1]

Originally Posted by Efthreeoh

I have to ask.

If the CDV delete makes such a drastic difference in clutch manipulation as several Posters on the Forum say it does, wouldn't the experienced foot of a BMW technician trained to repair BMW automobiles instantly feel the missing innards of the CDV and void your warranty?

You are making the invalid assumption that all BMW techs can even drive a stick. That sure isn't the case at my local dealership - I have had to reschedule a state inspection because they didn't have anyone who could drive my car into the shop. But they can certainly spot something missing.

As I have said before, while I don't feel that the difference is life altering, I do feel that it makes enough difference to take the 10 minutes to do it. Going back and forth between my two cars before I got around to doing the delete on my 128i, it was certainly noticeable to me.

If you don't feel it makes a difference, then don't bother to do it.

[Cyril Sneer]

I heard of a guy that removed his CDV, then the next year his dad got cancer. There's no way it's worth that risk!

[david in germany]

Cdv delete is still a good temp fix before adding upgraded clutch in a tuned 335i. Cdv causes slipping clutches (fact not opinion) when you are driving the car hard. My clutch was having slipping issues and after the cdv delete I got another year or so from my factory clutch but still needed a new one around 150k miles. If you are tuned, you will still need a better clutch in the long run if you push the car.

[david in germany]

Originally Posted by krhodes1

It takes ~10 seconds to do, and keeps the lines routed as BMW intended. And while irrelevant now, my car was under warranty when I removed the restrictor, so not having anything seem out of the ordinary mattered.

But you do you.

Lines are still routed exactly how they were from the factory. You just remove a little coupling piece between them (cdv).

[StradaRedlands]

Originally Posted by e90yyc

Admins: Close this thread. This shit is OVER.

Yeah, really... I mean, who would have posted something so inflammatory to begin with!?!??!