Removing CDV from an ///M, does it make any difference?
- Thread starter srhutch
- Start date
Terryvision
Lifer
srhutch said:
I've got some axel stands....but I really don't wanna be working on cars anymore! Might wait until its service time! Should I get a modified unit or just join the pipes together? Anywhere in the uk sell the modded CDV?
Terryvision
Lifer
srhutch said:
My MOT/Service is due in May so i'll get the garage to do it whilst its on the ramp, too old to be crawling under cars...
Just found your old post: http://www.z4-forum.com/forum/viewtopic.php?t=1227
I had mine removed a few years ago, and frankly the difference was VERY slight, if at all.. at least to my left leg. Got better results from replacing the motor mounts with VT street mounts, and Rogue Engineering trans mounts at the same time. Those were definitely worthwhile upgrades.
Steve_R1979
Member
srhutch said:
Thats good to know. Billingshurst is just down the road!
It makes little difference on the ///M, certainly it won't prevent pogoing when cold - only learning to engage the clutch carefully until the engine warms up will do that.
It doesn't really improve the stiff first to second gear change either, again that is a characteristic of the gearbox. If you are experiencing denied gear shifts, change to the VT engine mounts.
The greatest enemy of smooth driving in the ///M is the stupid fly-by-wire throttle. As the first part of the pedal travel has little effect on engine speed, those used to a throttle cable will need to learn to drive round it. Engaging Sport Mode makes for a night-and-day improvement in throttle response but even that is a poor substitute for a throttle cable.
I removed my CDV several years (and several tens of thousands of miles) ago and this seems to have caused no harm to the drivetrain. However, I wouldn't have bothered removing it had I know it has so little effect.
*I understand from other forum members that it has a really big effect on non-///Ms and it seems to on the Z3.
It doesn't really improve the stiff first to second gear change either, again that is a characteristic of the gearbox. If you are experiencing denied gear shifts, change to the VT engine mounts.
The greatest enemy of smooth driving in the ///M is the stupid fly-by-wire throttle. As the first part of the pedal travel has little effect on engine speed, those used to a throttle cable will need to learn to drive round it. Engaging Sport Mode makes for a night-and-day improvement in throttle response but even that is a poor substitute for a throttle cable.
I removed my CDV several years (and several tens of thousands of miles) ago and this seems to have caused no harm to the drivetrain. However, I wouldn't have bothered removing it had I know it has so little effect.
*I understand from other forum members that it has a really big effect on non-///Ms and it seems to on the Z3.
