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CDV mod - a couple of questions...
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CDV mod - a couple of questions...
Hi
I'm finally getting round to looking at the CDV mod for my zed. I keep reading about 'CDV DELETE' - is this the complete removal of the valve? or do you simply replace it with a modified valve? If so can anyone recommend a modified valve for me to purchase?
Sorry if I'm asking stupid questions, just a bit stuck on this one....
Cheers!
Cal
I'm finally getting round to looking at the CDV mod for my zed. I keep reading about 'CDV DELETE' - is this the complete removal of the valve? or do you simply replace it with a modified valve? If so can anyone recommend a modified valve for me to purchase?
Sorry if I'm asking stupid questions, just a bit stuck on this one....
Cheers!
Cal
2007 2.5si - Montego Blue
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Re: CDV mod - a couple of questions...
I'm guessing looking at your signature that your car will still be covered by a BMW warranty. As a result of this you may not want to remove the CDV totally incase it causes warranty issues in future.
Have a look here for the modified one http://www.zeckhausen.com/cdv.htm
They can be removed totally though if needs be.
Have a look here for the modified one http://www.zeckhausen.com/cdv.htm
They can be removed totally though if needs be.
Mods so far : 3" stubby ariel, chrome exhaust tips, de-badging, clear side indicators, CDV delete, cruise, clear 3rd brake light, cup-holders, Z4M alloys. Sadly now gone!
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Re: CDV mod - a couple of questions...
How much does it cost to have fitted? And where would you get it done, assuming you don't want BMW to know about it?
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Re: CDV mod - a couple of questions...
£20/£30 at a local indy garage, thats all I did with mine, they had it up on the ramps and done in no time.
Mods so far : 3" stubby ariel, chrome exhaust tips, de-badging, clear side indicators, CDV delete, cruise, clear 3rd brake light, cup-holders, Z4M alloys. Sadly now gone!
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Re: CDV mod - a couple of questions...
Ah, this explains what is going on - I thought my 'box or clutch or gear linkage needed a bit of noodling. After the direct bolt action of the TVR I am finding fast shifting frustrating in the Z4.
Come to Daddy: 2004 TVR T350 Targa
Current stable: 2006 Golf GTi, 2007 Fiat Panda 100HP
Previous: 2004 Z4 3.0 Manual in Toledo Blue, 2004 TVR T350 Targa, 1995 TVR Chimaera
Current stable: 2006 Golf GTi, 2007 Fiat Panda 100HP
Previous: 2004 Z4 3.0 Manual in Toledo Blue, 2004 TVR T350 Targa, 1995 TVR Chimaera
- srhutch
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Re: CDV mod - a couple of questions...
Buy a CDV from your local dealer for just under £10 and modify yourself.
http://www.z4-forum.com/forum/viewtopic ... cdv#p17422
http://www.z4-forum.com/forum/viewtopic ... cdv#p17422
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Re: CDV mod - a couple of questions...
Unfortunately that would take a modicum of ability, which I don't have
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Re: CDV mod - a couple of questions...
thanks for the feedback. does it do the car any physical harm to remove the valve completely? besides the warranty issue....
2007 2.5si - Montego Blue
- srhutch
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Re: CDV mod - a couple of questions...
if anything it looks after your car better, your clutch will last longer as it wont slp so much.52 CAL wrote:thanks for the feedback. does it do the car any physical harm to remove the valve completely? besides the warranty issue....
- pvr
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Re: CDV mod - a couple of questions...
.. but the drivetrain is no longer protected (BMW words - not mine)
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- Mr Whippy
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Re: CDV mod - a couple of questions...
Does the SMG run a CDV I wonder?
Or is the computer trusted to not jolt the drivetrain with it's supersport shifting
Dave
Or is the computer trusted to not jolt the drivetrain with it's supersport shifting
Dave
04 3.0i, Titanium Silver, 107s, red m-sport interior
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Re: CDV mod - a couple of questions...
Not relevant as the Auto models are boulevard cruisers anyway.Mr Whippy wrote:Does the SMG run a CDV I wonder?
Or is the computer trusted to not jolt the drivetrain with it's supersport shifting
Dave
Come to Daddy: 2004 TVR T350 Targa
Current stable: 2006 Golf GTi, 2007 Fiat Panda 100HP
Previous: 2004 Z4 3.0 Manual in Toledo Blue, 2004 TVR T350 Targa, 1995 TVR Chimaera
Current stable: 2006 Golf GTi, 2007 Fiat Panda 100HP
Previous: 2004 Z4 3.0 Manual in Toledo Blue, 2004 TVR T350 Targa, 1995 TVR Chimaera
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Re: CDV mod - a couple of questions...
Could we make this a sticky in the DIY section?srhutch wrote:Buy a CDV from your local dealer for just under £10 and modify yourself.
http://www.z4-forum.com/forum/viewtopic ... cdv#p17422
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Re: CDV mod - a couple of questions...
Although as far as I can see, this only means the drivetrain is slightly less protected than normal, rather than not protected at all - and this assumes the driver is going to drop the clutch with high revs every couple of minutespvr wrote:.. but the drivetrain is no longer protected (BMW words - not mine)
However, the transmission has a guibo/flex-disc anyway, which was what they used on all the other ///Ms for the last 20 years to absorb some of the drivetrain shock - never had a problem with the clutches on either of the my e34 M5s, and they had 200kg more mass to move from standstill.
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Re: CDV mod - a couple of questions...
SMG doesn't have CDV.Mr Whippy wrote:Does the SMG run a CDV I wonder?
Or is the computer trusted to not jolt the drivetrain with it's supersport shifting
Dave
Tref wrote:Not relevant as the Auto models are boulevard cruisers anyway.Mr Whippy wrote:Does the SMG run a CDV I wonder?
Or is the computer trusted to not jolt the drivetrain with it's supersport shifting
Dave
Comments like this is what will make people think you're a newb in the bimmer world.
'08 BMW Z4///MC 18" & 19" BBS RGR's|Michelin PSS'|TCK DA's 450/500|OEM CF spoiler|Aero side-skirts|ZHP gear-knob|OEM STB|
'06 BMW Z4///MR (sold)
'04 BMW Z4 3.0i 6sp SMG (lemon)
'03 BMW Z4 2.5i non-sport (sold)
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'03 BMW Z4 2.5i non-sport (sold)