Hard to tell from that angle, but looks like it's gone, need a pic from the other side to be sure.
Mike
Mike
Cdv removal clutch delay valve OMG!
- Thread starter jamie_z4
- Start date
thanatu55 said:
There is NO way you could get away as fast in 2nd as in 1st, especially in a 2.0, sprint booster or not. Those sprint boosters are a waste of time and money, all they do is "move" the throttle map, they don't make it any "quicker" you get exactly the same effect by pressing further on the accelerator. Try pulling away quickly in 2nd and you'll see exactly what the CDV does, the clutch WILL slip..
Mike
thanatu55 said:
You could try pulling away in second gear with loads of torque.....but don't expect your clutch to see out the week! The main reason that first gear ratios are set at the ratio they are in any sort of car is to manage the thermal energy of pull away, allowing for likely gradients that you might encounter. Most cars will pull away in 2nd but the thermal loading from increased torque load downstream of the clutch will quickly destroy a standard road car clutch if repeated regularly.
Chris
Ducklakeview said:
I don't understand why your trying to compensate for the cdv with a sprintbooster. Having a partially slipping clutch is still having a partial slipping clutch whether you use a BMW sport button (If installed),sprintbooster, remap
or even turbo/supercharge it. The clutch issue will still detract from the performance so you really want to fix that with the CDV removal rather than try to compensate or mask it in some way.
I don't understand why the sprintbooster gets such a bad rap. I can understand some loving and some loathing the sharpened throttle response. but what I can understand is why their sneered at yet It does to the throttle exactly what the BMW sport button does and folks seem to like that. In fact sprintboosters allow you an even sharper throttle response than the sport button does which really livens up the car. Its the same trick a lot of remappers employ on normally aspirated cars, thats why do many folks rave about their remap afterwards despite the headline gains being marginal. My biggest issue these days with sprintboosters is they've become so damn expensive, you might as well pay a little more for a proper remap.
+1 for CDV (don't like to admit how long it took me to get around to it.)
Re SprintBooster - Wouldn't you rather press the accelerator further down/faster when you want to get away faster/smoke the tyres and have the option to drive a little more normally when your boss is in the car (without having to muck about pressing buttons)? The only button you need turns the traction control off.....
Re SprintBooster - Wouldn't you rather press the accelerator further down/faster when you want to get away faster/smoke the tyres and have the option to drive a little more normally when your boss is in the car (without having to muck about pressing buttons)? The only button you need turns the traction control off.....
JINGLE said:I still havnt done the CDV delete in my little 2.0I feel like I’m missing out
Trust me, you are. I was sceptical until I did the 2.0,as was Jamie until I did his 3.0 and his E46..
Mike
MACK said:
That was really the crux of what I was trying to say, that I'd rather remove the CDV than try to compensate for it in any way, but yes I completely agree with your point.
As for the Speed Booster, I love it. It does feel 'sportier' whilst using it, which is welcome on a low spec engine, and it does feel like I have a bit more power even if it's just an illusion. My initial reason for buying it was because I bought the car with a problem in first gear, it would slip out of it straight away. I mentioned it in my first post on the forum. So instead, for the brief time that I couldn't get around to sorting it I had to set off in second, which was a real pain in the a**e. The Sprint Booster made it easier for me to set off in second and pull out at junctions, and whilst it may not be the recommended solution, it was mine. And it most definitely DID help in that respect, as somebody who had no other option but to set off in second every time, trust me I HAVE thoroughly tested setting off in second with and without the use of the Sprint Booster. Yes there's an element of "If you just put your foot down more...", but would you want to have to floor it at every junction, every set of lights, every gap in the traffic and just hope it'll have the kick to pull away quick enough without the geezer behind you slamming his horn at you? I was able to use second gear as I would normally use first gear, try it.
However, since having the Sprint Booster I find myself returning to it most of the time because it just makes driving feel so much better, like you say, it's a sport button for a car that doesn't have one. I don't have it to compensate for the CDV but I have used it in that way, or at least in a fashion that I speculated that removing the CDV might help, to pull off that little bit quicker, and removing the CDV is the next job on my list.
I like the sprintbooster it works and this "just put your foot down more for the same effect!" Holds no water, its usually spouted by folks who haven't tried them and call them snake oil etc. The car feels flat with it switched off in comparison. I know its not quite the same thing but a good comparison is its similar to the feel on modern BMWs when you go from eco pro to sport but even sharper. No one says "leave it in eco pro and just put your foot down more". But like I said before alot of the same folks then rave about a "sport button" which is doing exactly the same thing. I had a BMW sprintbooster for must be 10 years. I was as sceptical as most about these when they first came out. Got a deal on one with the option to return it so thought what the hell no risk. I've used it on everything from a 4.8 v8 X5 to a 118i. Does what it says on the tin. Mine installed on the zed and every so often I turn it off. The car feels so flat without the sharper throttle. I turn it back on fairly quickly. Mines the older type with 3 set modes but I've usually got it set to red unless I'm sat in traffic for a hour and then I'll turn it off. I've hidden the button with easy access so it's just as easy as pushing the sport button.
Modern drive by wire throttles don't respond anything like as quick as their cable predecessors. We all got used to being nannied by these and the likes of CDVs, dual mass flywheels and stability systems etc. My view is the sport buttons and sprint boosters of this world just remove this programmed in sluggishness taking the throttle response back to what we used to get with cable jobbies and maybe a bit extra.
Ever driven a car with a race prepped engine and cable operated throttle bodies? Now that's a responsive throttle!
Actually the CDV and Sprintbooster are very similar in the sense that most are sceptical until they actually try
Modern drive by wire throttles don't respond anything like as quick as their cable predecessors. We all got used to being nannied by these and the likes of CDVs, dual mass flywheels and stability systems etc. My view is the sport buttons and sprint boosters of this world just remove this programmed in sluggishness taking the throttle response back to what we used to get with cable jobbies and maybe a bit extra.
Ever driven a car with a race prepped engine and cable operated throttle bodies? Now that's a responsive throttle!
Actually the CDV and Sprintbooster are very similar in the sense that most are sceptical until they actually try
Well I’ve got mine up on the ramps this weekend whilst at my mates work (he’s swapping tyres out before a hunter alignment next week) as I need to investigate an annoying rattle under the car, sounds like a loose heat shield or something, so while under there I’ll have a look at the CDV removal.... without searching the whole forum, can somebody give me a quick how to?
Or is it literally, clamp pipe before CDV, remove it, reconnect pipe and unclamp? What if I lose any fluid? What if I let air in?
Or is it literally, clamp pipe before CDV, remove it, reconnect pipe and unclamp? What if I lose any fluid? What if I let air in?
You don't even need to clamp the pipe. Literally two spanners is all that's needed. Unscrew the CDV remove then reconnect the two pipes. Job done no bleeding should be necessary. In terms of the work required it really is one of the quickest mods you can do. Access is the issue for most really.JINGLE said:
As above Jamie. You'll need 2 x 17mm and 1 x 11mm open ended spanners. I DO clamp the pipe, simply to stop fluid peeing onto the floor.
Use the 2 x 17mm to break the seal between the valve and the hose whilst it's still in situ, easier than trying to do it with fluid dripping out, then use one of the 17mm on the valve itself and the 11mm to undo the flare nut on the pipe. Pull out the hose, unscrew the loosened valve from the end and push the hose back through the grommet before reinserting the flare nut and tightening - Don't forget the retaining spring.
I then unclamp the hose, and open the bleed nipple on the slave cylinder briefly, you'll need a 7mm socket and long extension, until clear fluid dribbles out. As the system is fed from above via the brake master cylinder, it will purge the air using gravity.
Job done..
Mike
Use the 2 x 17mm to break the seal between the valve and the hose whilst it's still in situ, easier than trying to do it with fluid dripping out, then use one of the 17mm on the valve itself and the 11mm to undo the flare nut on the pipe. Pull out the hose, unscrew the loosened valve from the end and push the hose back through the grommet before reinserting the flare nut and tightening - Don't forget the retaining spring.
I then unclamp the hose, and open the bleed nipple on the slave cylinder briefly, you'll need a 7mm socket and long extension, until clear fluid dribbles out. As the system is fed from above via the brake master cylinder, it will purge the air using gravity.
Job done..
Mike
thanatu55 said:
On facelift cars, well at least the 6 cyl one's there is a stainless plate that has 3 x 10mm bolts securing it, remove these and it will swing out of the way. The 2.0 facelift doesn't have it.
Mike