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BMW 3-Series (E90 E92) Forum
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would you pay for a CDV delete?
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09-03-2019, 09:11 AM | #1 |
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would you pay for a CDV delete?
the little fucker is stuck. ive replaced steering racks, control arms, suspension, etc. love doing my own work. but rust is a bitch and i cant power tool my way of this one (unless yall have any suggestions).
question is, would you pay for a CDV delete? and whats it worth? $100? |
09-03-2019, 10:08 AM | #2 |
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i think a shop would just charge an hours labor to do it. it literally took me 5 mins to do it. i just clamp down the rubber hose with a vise grip so no fluid came out. removed the cdv reconnected the hose and that was it. i didnt need re bleeding but some do it anyway.
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09-08-2019, 07:45 AM | #5 | |
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That valve is super infuriating for people who learned on older vehicles without one. I always removed them and the clutch is more manageable and predictable when trying to drive spiritedly. I say get rid of it. |
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09-08-2019, 09:04 AM | #6 |
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I drove my E92 with CDV for 2 years before removing it after doing some research.
I found with the CDV if you drive at a slow pace the drive is smooth as the clutch drops slowly. But when you when you need quick gear change from 1st to 2nd there is a lot of clutch slip. I guess you could live with the CDV fitted just don't try quick gear changes. |
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09-08-2019, 10:04 AM | #7 | |
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Same with run-flats. Never really noticed much of a difference switching to non-runflats.
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A manual transmission can be set to "comfort", "sport", and "track" modes simply by the technique and speed at which you shift it; it doesn't need "modes", modes are for manumatics that try to behave like a real 3-pedal manual transmission. If you can money-shift it, it's a manual transmission. "Yeah, but NO ONE puts an automatic trans shift knob on a manual transmission."
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09-08-2019, 02:07 PM | #8 | |
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I found it made a world of a difference in older chassis variants. Then again, this is one of those choices where it comes down to personal preference. |
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09-08-2019, 03:18 PM | #9 | |
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Coming from experience mine was stuck too, 2006 build, guessing yours too, which has metal receiver part for the CDV. Later years everything is plastic there. The problem is the metal receiver part corrodes and corrosion expands. This presses on the CDV section that is inside it, blocking it from removal. The corrosion inside surrounds the o-ring too making not want to come out. I had spent half an hour, first to free the rusted/corroded springy locking clip without breaking it and then trying to move the CDV back and forth, and rotate little buy little with penetrating oil sprays multiple times. Eventually it comes out. This was 3-4 years ago. Now it would have more rust, corrosion. Not sure if I would touch it But a specialist wouldn't do any better, if it is that bad they would call you back and tell, well we need to buy the replacement parts because this thing didn't come out without damage due to corrosion. If they can take it out without damage, you can too, just use 3P and I (patience, perseverance, penetrating oil, Impacts). Impacts here will be small taps here and there. If you mess up the line to the slave cylinder, the line is sold as part, but you may need to replace the slave cylinder also, if you have early year. Not sure the slave cylinder in yours will work with the line available now, if you have 06 build. The slave cylinder on 06 is all metal, and later years is all plastic too. I love it when CA, AZ, FL guys comments on something "well it took me 5 minutes..." when they never had to deal with rust frozen parts... :P |
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09-08-2019, 04:38 PM | #11 |
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Payed my Indy 100 to put it in while doing other Service.
Takes the mush out of the peddle, feels better, much better. Much like every other car I have ever owned which have all been manuals. |
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09-08-2019, 06:50 PM | #12 | |
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09-08-2019, 08:31 PM | #13 |
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It's not a preference, I just didn't feel any difference. I've been driving a manual trans for over 1M miles and most of that in BMWs. I just don't think there is a difference.
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A manual transmission can be set to "comfort", "sport", and "track" modes simply by the technique and speed at which you shift it; it doesn't need "modes", modes are for manumatics that try to behave like a real 3-pedal manual transmission. If you can money-shift it, it's a manual transmission. "Yeah, but NO ONE puts an automatic trans shift knob on a manual transmission."
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09-09-2019, 12:43 AM | #14 | |
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I have noticed that the e90 has a notchy pedal feel, versus some of the other cars I’ve driven. BMS bump stop helped a lot, was hopping the Cdv delete would as well. |
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09-09-2019, 07:25 AM | #16 | |
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This was never an improvement at gear selection though. |
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09-09-2019, 07:01 PM | #18 |
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I agree. I didn't feel any difference either. But, then again, I don't just drop my clutch.
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09-10-2019, 03:00 AM | #19 | |
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09-10-2019, 03:25 PM | #21 | |
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My opinion is, any perceived difference is a placebo effect. |
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09-10-2019, 03:48 PM | #22 |
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My E30 basically has a race clutch in it, and it's not that much of a difference going between that and my 330i. Definitely too small of a difference for me to be bothered with crawling under my car instead of doing something else more worthwhile.
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