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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Cosmetic and Lighting Modifications (exterior/interior) > CDV Mod?



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      03-08-2010, 12:49 PM   #1
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CDV Mod?

I am upgrading to a B&M SSK, but I understand that the OEM CDV will be a serious bottleneck in the system... So, this should go as well.

For what I read, I understand that some people take the CDV off completely (delete) and some replace it for a lease restrictive CDV (modified CDV).

So, what are the Pros/Cons of each option? Is it better to delete or to replace?

Please let me know your thoughts!
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      03-08-2010, 01:29 PM   #2
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I don't think it's necessary to purchase modified CDV. You can simply remove the existing CDV and attach what's remaining
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      03-08-2010, 01:33 PM   #3
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Quote:
Originally Posted by Mike@F1 Autohaüs View Post
I don't think it's necessary to purchase modified CDV. You can simply remove the existing CDV and attach what's remaining
true ...that works. i have the BMS CDV which basically just bores out the stock CDV...so if someone were to do a visual inspection...the valve appears to be in place and still functioning as intended.
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      03-14-2010, 06:20 PM   #4
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what does removing/modifying the cdv do? Does it make it so the car won't stay in place on a hill when the clutch is depressed before pushing the gas? Or shift delays, what?
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      03-14-2010, 08:35 PM   #5
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Quote:
Originally Posted by mycoupe View Post
what does removing/modifying the cdv do? Does it make it so the car won't stay in place on a hill when the clutch is depressed before pushing the gas? Or shift delays, what?
more info :

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

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... you will be able to shift gears in your BMW just like a "normal" car. No more vague, inconsistent clutch engagement. No more jerky 1-2 shifts. You can actually chirp the tires when shifting from 1st to 2nd gear! Parallel parking becomes a breeze and your clutch will love you for it and last much longer. Best of all, your passengers will stop making fun of your driving skills.
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      03-14-2010, 08:53 PM   #6
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Doesnt the CDV mod wear the clutch quicker?
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      03-14-2010, 09:05 PM   #7
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Quote:
Originally Posted by Nr!qUe View Post
Doesnt the CDV mod wear the clutch quicker?
No, the CDV makes the clutch wear out quicker
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