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  1. #1
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    CDV Delete Thoughts

    Hi Guys, I plan on having my CDV modified soon. I was wondering, I've gotten so used to the way the car is shifting, that I'm afraid I might be disappointed when I do the CDV delete because of course it changes the whole cars shifting feeling, what are everyone's thoughts? Do you like your modified CDV?

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    I'm anxious to know as well, I haven't deleted mine and really don't mind the way the car shifts, except when I have the AC on.
    Click here to enlarge
    ESS 6XX kit

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    You won't regret it. That clunk you get when shifting fast, usually from 3-4 will be gone. I wish I had done it a long time ago.
    2011 335is DCT, JB4 + MHD BEF, stage 2 LPFP, e50 + 50/50 meth, FBO, MT ET Streets when needed


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    Click here to enlarge Originally Posted by bigdnno98 Click here to enlarge
    You won't regret it. That clunk you get when shifting fast, usually from 3-4 will be gone. I wish I had done it a long time ago.
    How much fluid did you have to add to make up for the loss? minimal?

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    Not sure. We did it when I had my clutch replaced. I heard you have to bleed it well though.
    2011 335is DCT, JB4 + MHD BEF, stage 2 LPFP, e50 + 50/50 meth, FBO, MT ET Streets when needed


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    Click here to enlarge Originally Posted by bigdnno98 Click here to enlarge
    You won't regret it. That clunk you get when shifting fast, usually from 3-4 will be gone. I wish I had done it a long time ago.
    +1. And no lurching in the 1-2 shifts. Crisper feeling with no need to feather the clutch as much. Don't think twice about it. Afterall, the M3 has a non restrictive CDV too
    [02/07 E92 335i 6MT] - Under Construction

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    Click here to enlarge Originally Posted by nitehawk Click here to enlarge
    +1. And no lurching in the 1-2 shifts. Crisper feeling with no need to feather the clutch as much. Don't think twice about it. Afterall, the M3 has a non restrictive CDV too
    Nice ! The clunk from 1st to second does kind of get to me sometimes ! I'm going to have it done soon. I'm loving jb4 on the car, I have dci sitting on the side also

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    I kinda wish I hadn't done mine at first. Now it doesn't matter as I'm used to it but after doing it I had to relearn how to use the clutch. I didn't have any lurch, slowness, jerkiness or any problems driving the car smooth. I fell victim to the hype of how great it was and will agree it's not quite as numb as it was but I also didn't have clutch engagement noises like I do now from a stop.

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    Did it about 2 weeks after I got my 135i. Will never look back! With the stock CDV the clutch felt less controllable, and changing gears was jerky sometimes. No where near as predictable as it is without it. DO IT!
    John 3:16


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    Click here to enlarge Originally Posted by brusk Click here to enlarge
    I kinda wish I hadn't done mine at first. Now it doesn't matter as I'm used to it but after doing it I had to relearn how to use the clutch. I didn't have any lurch, slowness, jerkiness or any problems driving the car smooth. I fell victim to the hype of how great it was and will agree it's not quite as numb as it was but I also didn't have clutch engagement noises like I do now from a stop.
    me no like clutch engagement noise Click here to enlarge

    Click here to enlarge Originally Posted by leo985i Click here to enlarge
    Did it about 2 weeks after I got my 135i. Will never look back! With the stock CDV the clutch felt less controllable, and changing gears was jerky sometimes. No where near as predictable as it is without it. DO IT!
    Im having mixed thoughts now, how noisy is urs??

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    Do it, you wont regret it.
    Click here to enlarge
    2007 335i Coupe
    Mods: Check the Garage

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    Click here to enlarge Originally Posted by straightcashhomie Click here to enlarge
    Im having mixed thoughts now, how noisy is urs??
    Not noisy at all I would say. Nothing that's bothersome whatsoever.
    John 3:16


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    Click here to enlarge Originally Posted by leo985i Click here to enlarge
    Not noisy at all I would say. Nothing that's bothersome whatsoever.
    not necessarily noisy I guess I meant a lurch when the CDV delays the clutch engagement, when it finally grabs it was more of a lurch. Happened mostly when quick shifting from 1-2 and and 3-4. It's now completely gone.
    2011 335is DCT, JB4 + MHD BEF, stage 2 LPFP, e50 + 50/50 meth, FBO, MT ET Streets when needed


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    Click here to enlarge Originally Posted by straightcashhomie Click here to enlarge
    me no like clutch engagement noise Click here to enlarge
    It not that noisy don't even notice it most of the time but when I first start the car and have the windows down I can hear it engage when I never noticed it before. Take it out if you don't like it put it back in.

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    It cannot make noise. Think about it.

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    Click here to enlarge Originally Posted by rudypoochris Click here to enlarge
    It cannot make noise. Think about it.
    a clutch can't make noise?

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    Click here to enlarge Originally Posted by brusk Click here to enlarge
    a clutch can't make noise?
    A CDV. Removing the restriction in the CDV does not cause the clutch to make a noise. Whatever is causing the clutch to make noise is something else. Also the stock clutch is silent.

    All the CDV does is delay the reaction time of the clutch in relation to your pedal input.

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    I had it done as one of my 1st mods. I didn't feel any difference at all.
    Click here to enlarge

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    Click here to enlarge Originally Posted by rudypoochris Click here to enlarge
    A CDV. Removing the restriction in the CDV does not cause the clutch to make a noise. Whatever is causing the clutch to make noise is something else. Also the stock clutch is silent.

    All the CDV does is delay the reaction time of the clutch in relation to your pedal input.
    The clutch may be silent, but this is one of the noisiest flywheels I've ever had in a stock car. Dual mass, I guess.

    On that note, delete your CDV OP. It should have come that way from the factory.
    JB Stage 2 ISO, BMW Performance Exhaust, M3 front control arms, RPI scoops, CDV delete

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    Click here to enlarge Originally Posted by jdub679 Click here to enlarge
    The clutch may be silent, but this is one of the noisiest flywheels I've ever had in a stock car. Dual mass, I guess.

    On that note, delete your CDV OP. It should have come that way from the factory.
    Haha if you think your oem DMFW is noisy def don't get a lightweight FW Click here to enlarge your stock clutch and flywheel shouldn't make any noise. Maybe your throw out bearing when pressing the pedal down but that's about it.
    2011 335is DCT, JB4 + MHD BEF, stage 2 LPFP, e50 + 50/50 meth, FBO, MT ET Streets when needed


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    Click here to enlarge Originally Posted by sr20seb Click here to enlarge
    I had it done as one of my 1st mods. I didn't feel any difference at all.
    I didn't feel a difference either. I think different people adjust their clutch points differently. Maybe for me and you we just deal with it in the head. That is the only conclusion I could come to. I also trigger WOT shifts when I am not shifting because I go WOT before fully off the clutch pedal for instance.

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    had my cdv fully removed, not just gutted

    much better, can downshift smoothly now

    how is a solid LWFW noisier than the DMF? all my previous cars had totally silent light clutches, my DMF rattles like crazy though when disengaged.

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    Click here to enlarge Originally Posted by Flinchy Click here to enlarge
    had my cdv fully removed, not just gutted

    much better, can downshift smoothly now

    how is a solid LWFW noisier than the DMF? all my previous cars had totally silent light clutches, my DMF rattles like crazy though when disengaged.
    Exactly what I meant earlier. Also when it spins down when the engine is stopped.
    JB Stage 2 ISO, BMW Performance Exhaust, M3 front control arms, RPI scoops, CDV delete

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    Weird. Sorry guys, DMF is totally capable of being silent engaged or disengaged. Must be install, worn component, or a funky DMF...

  25. #25
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    Click here to enlarge Originally Posted by jdub679 Click here to enlarge
    Exactly what I meant earlier. Also when it spins down when the engine is stopped.
    oh yeah, clutch out when turning off the car sounds REALLY unhealthy lol
    Click here to enlarge Originally Posted by rudypoochris Click here to enlarge
    Weird. Sorry guys, DMF is totally capable of being silent engaged or disengaged. Must be install, worn component, or a funky DMF...
    not according to the entire internet

    the way the DMF's are constructed means they rattle, it's a 'mass' sprung inside another mass, the springs load and unload constantly when not under pressure of engagement

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