Cdv delete - BMW 3-Series (E90 E92) Forum

g335 · 10-26-2012, 12:04 PM

Best mod ever! I re fell in love with my car again.

blackshan · 10-26-2012, 01:08 PM

I just got mines in and should be putting it soon. Hope I feel the same! So cheap I said why not! Lol!

ilirduka335xi · 10-26-2012, 01:37 PM

Quote:

Originally Posted by g335

Best mod ever! I re fell in love with my car again.

What's a cdv ?

ilirduka335xi · 10-26-2012, 01:38 PM

And why does it do to your car when you delete it ?

335iaz · 10-26-2012, 02:05 PM

Quote:

Originally Posted by ilirduka335xi

What's a cdv ?

Clutch Delay Valve .. it restricts the amount of fluid ... which .. I have had my modified CDV valve sitting in my garage for over a year now ... not sure I want to switch it .. lol.

g335 · 10-26-2012, 07:42 PM

it's a subtle diff but I notice it and enjoy my car soo much more. When I drive n shift aggressively, I'm now rewarded with bliss rather than smacked on the hand with a jerky shift/clutch engagement.

Save those "nannies" for those who don't know how to properly use a third pedal... This is a must do IMO

Kcyrusm · 10-26-2012, 08:37 PM

It restricts the amount of clutch fluid, resulting in a bit of lag in clutch engagement. Removing it or replacing it with a modified one gives you crisper clutch engagement. It's there to "protect" the clutch but can cause a bit of premature wear from the clutch slipping a bit during hard/fast shifts. Removing/modifying it also makes rev-matching/heel-toe'ing easier and more precise.

tracerit · 10-28-2012, 12:16 PM

does this do anything for daily driving? i used to shift low (2000-2500k) for some stupid reason lol but after shifting higher up at 3000-3500, i can get smooth shifts more often (not all the time still). i drive modestly otherwise.

my main battle with a 6MT is getting the going without the clutch "chattering". i either have to very slowly let the clutch out or rev to 800-1000rpm then let it out but that burns the clutch.

Eric335 · 10-28-2012, 08:24 PM

Quote:

Originally Posted by tracerit

does this do anything for daily driving? i used to shift low (2000-2500k) for some stupid reason lol but after shifting higher up at 3000-3500, i can get smooth shifts more often (not all the time still). i drive modestly otherwise.

my main battle with a 6MT is getting the going without the clutch "chattering". i either have to very slowly let the clutch out or rev to 800-1000rpm then let it out but that burns the clutch.

I wouldnt say 800-1000 RPM burns the clutch. Thats about where i let it out, but maybe thats why i need a new clutch

Gugs · 10-28-2012, 10:43 PM

Youll never get rid of the chatter cause its the dual mass flywheel thats chattering. Its doing what its designed to unfortunately and the chatter is a by product.

tracerit · 10-29-2012, 01:24 AM

would you say it's normal then? or is the chattering a result of an incorrect clutch engagement?

Pankakez & BMWs · 10-29-2012, 04:06 AM

Quote:

Originally Posted by g335

Best mod ever! I re fell in love with my car again.

hey when you install this, do you have to bleed the line after? how hard is this to DIY?

bigdaddycane · 10-29-2012, 06:35 AM

Quote:

Originally Posted by Pankakez & BMWs

hey when you install this, do you have to bleed the line after? how hard is this to DIY?

http://www.e90post.com/forums/showthread.php?t=29828

10-26-2012, 12:04 PM	#1
g335 Private Drives: 335i coupe Join Date: Sep 2011 Location: pa Posts: 64 iTrader: (0)	Cdv delete Best mod ever! I re fell in love with my car again.
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10-26-2012, 01:08 PM	#2
blackshan Private First Class Drives: 2008 AW 335i Coupe Join Date: Dec 2010 Location: Tulsa, OK Posts: 131 iTrader: (2)	I just got mines in and should be putting it soon. Hope I feel the same! So cheap I said why not! Lol! __________________ JB4 15 ohm w/ CPS,and Meth, AFE DCI AND SCOOPS, ETS 7" Intercooler, AR Catted Downpipes,CP-E Exhaust, Carbon FIber CSL Style Trunk lid, M3 Side Skirts, Mtech front lip spoiler, Mtech rear bumper w/carbon diffuser and Alloy Technic 19" matte black rims.

10-26-2012, 01:38 PM	#4
ilirduka335xi Private First Class Drives: 2008 bmw 335xi space gray Join Date: Aug 2012 Location: Staten Island, New York Posts: 167 iTrader: (0) Garage List 2008 bmw 335xi [0.00]	And why does it do to your car when you delete it ? __________________ 08 335xi e92, JB4 15ohm, Afe s2 DCI/scoops, AR catless dps, H&R sport springs

10-26-2012, 08:37 PM	#7
Kcyrusm Second Lieutenant Drives: 2012 335is DCT Join Date: Oct 2010 Location: N. VA Posts: 291 iTrader: (1)	It restricts the amount of clutch fluid, resulting in a bit of lag in clutch engagement. Removing it or replacing it with a modified one gives you crisper clutch engagement. It's there to "protect" the clutch but can cause a bit of premature wear from the clutch slipping a bit during hard/fast shifts. Removing/modifying it also makes rev-matching/heel-toe'ing easier and more precise. __________________ ________________ BMS DCI \| AR Catless DP's \| ETS FMIC \| E38 Map Cobb Protuned by Jake@PTF 2012 BMW 335is: 11.926 @ 117.710 MPH (stock runflats)

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10-26-2012, 07:42 PM	#6
g335 Private Drives: 335i coupe Join Date: Sep 2011 Location: pa Posts: 64 iTrader: (0)	it's a subtle diff but I notice it and enjoy my car soo much more. When I drive n shift aggressively, I'm now rewarded with bliss rather than smacked on the hand with a jerky shift/clutch engagement. Save those "nannies" for those who don't know how to properly use a third pedal... This is a must do IMO

10-28-2012, 12:16 PM	#8
tracerit Captain Drives: 13 BRZ Limited 6MT Join Date: Apr 2006 Location: Huntington Beach/OC, CA Posts: 781 iTrader: (9)	does this do anything for daily driving? i used to shift low (2000-2500k) for some stupid reason lol but after shifting higher up at 3000-3500, i can get smooth shifts more often (not all the time still). i drive modestly otherwise. my main battle with a 6MT is getting the going without the clutch "chattering". i either have to very slowly let the clutch out or rev to 800-1000rpm then let it out but that burns the clutch.

10-28-2012, 10:43 PM	#10
Gugs Cynical Drives: E92 JetBlack Join Date: Jul 2012 Location: Long island Posts: 354 iTrader: (0)	Youll never get rid of the chatter cause its the dual mass flywheel thats chattering. Its doing what its designed to unfortunately and the chatter is a by product.

10-29-2012, 01:24 AM	#11
tracerit Captain Drives: 13 BRZ Limited 6MT Join Date: Apr 2006 Location: Huntington Beach/OC, CA Posts: 781 iTrader: (9)	would you say it's normal then? or is the chattering a result of an incorrect clutch engagement?