When did BMW stop using cable throttles?
Discussion
m12_nathan said:
On the 116i the delay just feels like a heavy flywheel to me. They can do it as the CSL has no lag at all.
With a heavy flywheel though you get a feeling that the engine knows what you want to do, and it's just spooling up ready to respond (like flooring the throttle on a big lorry). What I'm talking about it a completely dead pedal, like it's not connected to anything, for about half a second. Then suddenly the engine responds in an instant.m12_nathan said:
I just assumed that the 116i engine was shite and had a huge, huge flywheel that is hardly had the power to turn to be honest.
My memory may be fuzzy from that launch day, but I don't remember that feature about the 116i. Given that I drove every car in the range and didn't make notes you may well be right 
. I know for a fact that they all had a half second delay on the throttle. The auto is of course much worse but that's automatic boxes for you 
RobM77 said:
Sorry, I can't get to E Bay from work and it's my only internet access - what lies behind the link?
A device called a srint booster designed to remove/reduce the delay in fly by wire throttles.Try this link
http://www.cksperformance.com/BMW/Sprint_Boosters....
The delay is designed in to flatter numpty drivers (like the clutch delay valve) rather than being a result of the throttle being fly by wire.
Top pup said:
RobM77 said:
Sorry, I can't get to E Bay from work and it's my only internet access - what lies behind the link?
A device called a srint booster designed to remove/reduce the delay in fly by wire throttles.Try this link
http://www.cksperformance.com/BMW/Sprint_Boosters....
The delay is designed in to flatter numpty drivers (like the clutch delay valve) rather than being a result of the throttle being fly by wire.
What's a clutch delay valve by the way? My Elise and Caterham just have normal clutches.
The problem with me is balancing the car in corners. To me, the whole point of driving is to achieve a balance in the bends, and to balance something you need a direct connection between brain and the car's attitude (controllable on the throttle). With current BMWs, all I can do is maintain a steady throttle in the corner and live with whatever imperfections exist, such as a not so perfect turn in, bumps in the road, changing surfaces or grips levels etc. So the whole joy of cornering is removed - I might as well be in a Vectra
They just change the mapping, they can't speed up the actuation of the throttle flap.
Rob - if you are ever near Reading give me a shout, I'd love to see what you think about the CSL engine \ throttle relationship.
Clutch delay valves on BMWs just slow down the release of the clutch to enhance smoothness, very simple to remove them, or just get SMG which has no such nonsense
Rob - if you are ever near Reading give me a shout, I'd love to see what you think about the CSL engine \ throttle relationship.
Clutch delay valves on BMWs just slow down the release of the clutch to enhance smoothness, very simple to remove them, or just get SMG which has no such nonsense
m12_nathan said:
They just change the mapping, they can't speed up the actuation of the throttle flap.
Rob - if you are ever near Reading give me a shout, I'd love to see what you think about the CSL engine \ throttle relationship.
Clutch delay valves on BMWs just slow down the release of the clutch to enhance smoothness, very simple to remove them, or just get SMG which has no such nonsense
Thanks, that'd be interesting. I live just south of Reading actually (Stratfield Saye). Currently working and living in Taunton until Christmas, but I'll give you a call if I'm back in the Reading area with some free time. Shame I don't still have the old BMW; I could have shown you what I meant. A friend of mine filmed it, but sadly he lost the tape.Rob - if you are ever near Reading give me a shout, I'd love to see what you think about the CSL engine \ throttle relationship.
Clutch delay valves on BMWs just slow down the release of the clutch to enhance smoothness, very simple to remove them, or just get SMG which has no such nonsense
RobM77 said:
Top pup said:
RobM77 said:
Sorry, I can't get to E Bay from work and it's my only internet access - what lies behind the link?
A device called a srint booster designed to remove/reduce the delay in fly by wire throttles.Try this link
http://www.cksperformance.com/BMW/Sprint_Boosters....
The delay is designed in to flatter numpty drivers (like the clutch delay valve) rather than being a result of the throttle being fly by wire.
What's a clutch delay valve by the way? My Elise and Caterham just have normal clutches.
The problem with me is balancing the car in corners. To me, the whole point of driving is to achieve a balance in the bends, and to balance something you need a direct connection between brain and the car's attitude (controllable on the throttle). With current BMWs, all I can do is maintain a steady throttle in the corner and live with whatever imperfections exist, such as a not so perfect turn in, bumps in the road, changing surfaces or grips levels etc. So the whole joy of cornering is removed - I might as well be in a Vectra
I had a look to see if I could spot a delay on my Z4MC because of this thread, I hadn't noticed one before but there is a slight delay of about 0.1s - 0.2s which you can notice if you blip the throttle very quickly. Not enough to notice really.
A clutch delay valve (CDV) is a valve that delays the release of the clutch, I think all BMWs have one now, you notice it as a high, vague feeling biting point. On Z4s in particular it makes it very hard to change from 1st to 2nd smoothly.
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