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Old 02-29-2012, 04:43 PM   #1
Helka
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CDV Delete

Just did the Clutch Delay Valve delete. I highly recommend it to anyone who is planning on keeping their e9x and is tired of giving their passengers whiplash when shifting from 1st-2nd.

If you would like more information feel free to pm me. or go to http://www.zeckhausen.com/cdv.htm

Cheers

Jasper
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Old 02-29-2012, 04:46 PM   #2
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One of the best mods for our cars. I can't believe I drove with that thing for 2 years. I noticed the biggest difference on downshifts.
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Old 02-29-2012, 04:51 PM   #3
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Me too. i had my car for just over a year! worst year of driving compared to now.
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Old 02-29-2012, 07:04 PM   #4
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Gotta get that done on my Z4...
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Old 02-29-2012, 09:16 PM   #5
Helka
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Deep 3.2TL i'd be more then happy to help you. I'm just north west of milton in Guelph. You can eaither delete it outright or replace it with one from zeckhausen.
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Old 03-12-2012, 09:10 PM   #6
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Quote:
Originally Posted by Helka View Post
Deep 3.2TL i'd be more then happy to help you. I'm just north west of milton in Guelph. You can eaither delete it outright or replace it with one from zeckhausen.
I'm seriously thinking to delete mine, how hard was it ? which tools do you need ?

I heard some people saying you need to "bleed" the clutch, is that really necessary ?
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Old 03-12-2012, 09:22 PM   #7
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you need a 17mm and 14mm wrench (to be safe so you don't strip anything you should use flare nut wrenches) I got away with normal wrenches though. You should bleed it afterwards because its almost impossible not to introduce an air bubble into the system. Remember to top off the reservoir as well.

Here is a very detailed DIY

http://www.zeckhausen.com/cdv.htm

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Originally Posted by Kbm View Post
I'm seriously thinking to delete mine, how hard was it ? which tools do you need ?

I heard some people saying you need to "bleed" the clutch, is that really necessary ?
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Old 03-14-2012, 12:56 PM   #8
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you need a 17mm and 14mm wrench (to be safe so you don't strip anything you should use flare nut wrenches) I got away with normal wrenches though. You should bleed it afterwards because its almost impossible not to introduce an air bubble into the system. Remember to top off the reservoir as well.

Here is a very detailed DIY

http://www.zeckhausen.com/cdv.htm
And what about it on the long term ? did anyone had any reported issues from removing it ?

Just curious...
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Old 03-14-2012, 01:55 PM   #9
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^^ I doubt it... If anything the pressure before the valve would be decreased

It's definitely unnecessary in the system
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Old 03-14-2012, 02:09 PM   #10
Steve30
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If anything the CDV does more harm than good. It lets the clutch slip a little so it wears out faster. Its really to help people that can't shift smoothly.


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Old 03-17-2012, 04:07 PM   #11
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Fackkkkkk I should get mine out asap!!!!!!!! With the way I drive it defs doing more harm then good!
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Old 03-17-2012, 04:45 PM   #12
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this is brutally easy to do. Don't waste your money getting a "replacement" just remove the CDV, remember this is the way they come from the factory in Europe. The CDV is a north american "downgrade". I'd recommend pinching off the brake line that goes from the reservoir to the master cylinder and then just remove the CDV and screw the line directly on to the slave. You will likely not have to bleed it. If the pedal goes to the floor after this, just pump it and it will come back. (remember to unpinch the line before)
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Old 06-06-2014, 01:26 PM   #13
arvinz
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Sorry to bring this thread back from the dead, but I'd like to get this mod done, anyone in the Toronto area can do it or know a shop that can do this?
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Old 06-06-2014, 02:53 PM   #14
dcramer
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Anyone can do this, you don't even have to drain your clutch fluid. Just unscrew the CDV and screw them back together. You will lose a bit of fluid, but you don't need to bleed it
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