Anyone Else Mod Their Clutch Delay Switch?
#1
Pro
Thread Starter
Anyone Else Mod Their Clutch Delay Switch?
Has anybody else modded their clutch delay switch? I just read this on Cayman Club
http://www.caymanclub.net/cayman-mod...eated-joy.html
I just tried it out and WOW what a difference. The throttle pedal is now much more sensitive off the line and after shifts. Power after an upshift is much more immediately available. Heel-toe downshifts are much easier because I don't have to blip the throttle as deeply to get the revs up.
I don't know exactly what the clutch delay switch does, but it feels like it modifies the throttle map (makes it less sensitive) so you have to push the throttle pedal deeper to get increase the throttle while the delay is in effect. Since I got the 996 I've noticed a "turbo-lag-like" effect where upon a standing start, the engine will surge a little at around 3,000 rpm. I used to think that was the Variocam Plus kicking in. Now I am rethinking that theory. I think a more likely culprit is the clutch delay switch causing a throttle lag which coincidentally happens to end when I reach around 3,000 rpm.
Interesting.
http://www.caymanclub.net/cayman-mod...eated-joy.html
I just tried it out and WOW what a difference. The throttle pedal is now much more sensitive off the line and after shifts. Power after an upshift is much more immediately available. Heel-toe downshifts are much easier because I don't have to blip the throttle as deeply to get the revs up.
I don't know exactly what the clutch delay switch does, but it feels like it modifies the throttle map (makes it less sensitive) so you have to push the throttle pedal deeper to get increase the throttle while the delay is in effect. Since I got the 996 I've noticed a "turbo-lag-like" effect where upon a standing start, the engine will surge a little at around 3,000 rpm. I used to think that was the Variocam Plus kicking in. Now I am rethinking that theory. I think a more likely culprit is the clutch delay switch causing a throttle lag which coincidentally happens to end when I reach around 3,000 rpm.
Interesting.
#3
Pro
Thread Starter
This may replace the orange cap as the Best Bang for the Buck Mod.
#5
Parts Specialist
Rennlist Member
Rennlist Member
Not this one, this is a burnt orange color, twists out (I didnt need a light), quick tape up and fold it up in the wires..
Personally I tried it for about an hour and realized that after "learning" to shift this car over the last few months, I no longer wish it was "normal"... I switched back, simple enough to test if you like it....
Ed
#6
Instructor
Won't this disable your cruise control? The starter interlock switch is a different one that is triggered when the clutch pedal hits the floor, not when it is initially depressed.
#7
I actually dont like the extra response at the track.... Im much smoother with the throttle when it is dampened a bit. I find my gas pedal to touchy for my taste. But Ithink this mod may only be good from 1st to 2nd gear... so it will not impact so much at the track. I like the helper spring mod for clutch feel.... But Im sure I have to try this mod out one day since its so easy....
Thanks for the info...
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#8
Parts Specialist
Rennlist Member
Rennlist Member
no... this wont dis-able the CC cause it thinks the clutch pedal is always up.... it however, will not dis-able your CC if you have it enabled and step on the clutch.... the brakes will dis-able it though.
I actually dont like the extra response at the track.... Im much smoother with the throttle when it is dampened a bit. I find my gas pedal to touchy for my taste. But Ithink this mod may only be good from 1st to 2nd gear... so it will not impact so much at the track. I like the helper spring mod for clutch feel.... But Im sure I have to try this mod out one day since its so easy....
Thanks for the info...
I actually dont like the extra response at the track.... Im much smoother with the throttle when it is dampened a bit. I find my gas pedal to touchy for my taste. But Ithink this mod may only be good from 1st to 2nd gear... so it will not impact so much at the track. I like the helper spring mod for clutch feel.... But Im sure I have to try this mod out one day since its so easy....
Thanks for the info...
Forum Search.........
#9
the "war and peace" version
https://rennlist.com/forums/showthre...=clutch+spring
#10
Pro
Thread Starter
The new throttle feel definitely takes a little getting used to. Without the delay the throttle feel is more linear and the power comes on more quickly. The tradeoff is the sensitivity can make shifts jerky and make it harder to maneuver small distances at slow speed e.g. parallel parking into a tight spot on a hill.
Last edited by smackboy1; 09-12-2008 at 03:58 PM.
#13
Has anybody else modded their clutch delay switch? I just read this on Cayman Club
http://www.caymanclub.net/cayman-mod...eated-joy.html
I just tried it out and WOW what a difference. The throttle pedal is now much more sensitive off the line and after shifts. Power after an upshift is much more immediately available. Heel-toe downshifts are much easier because I don't have to blip the throttle as deeply to get the revs up.
I don't know exactly what the clutch delay switch does, but it feels like it modifies the throttle map (makes it less sensitive) so you have to push the throttle pedal deeper to get increase the throttle while the delay is in effect. Since I got the 996 I've noticed a "turbo-lag-like" effect where upon a standing start, the engine will surge a little at around 3,000 rpm. I used to think that was the Variocam Plus kicking in. Now I am rethinking that theory. I think a more likely culprit is the clutch delay switch causing a throttle lag which coincidentally happens to end when I reach around 3,000 rpm.
Interesting.
http://www.caymanclub.net/cayman-mod...eated-joy.html
I just tried it out and WOW what a difference. The throttle pedal is now much more sensitive off the line and after shifts. Power after an upshift is much more immediately available. Heel-toe downshifts are much easier because I don't have to blip the throttle as deeply to get the revs up.
I don't know exactly what the clutch delay switch does, but it feels like it modifies the throttle map (makes it less sensitive) so you have to push the throttle pedal deeper to get increase the throttle while the delay is in effect. Since I got the 996 I've noticed a "turbo-lag-like" effect where upon a standing start, the engine will surge a little at around 3,000 rpm. I used to think that was the Variocam Plus kicking in. Now I am rethinking that theory. I think a more likely culprit is the clutch delay switch causing a throttle lag which coincidentally happens to end when I reach around 3,000 rpm.
Interesting.
The switch you're talking about does one thing for several reason, one of them overlaping the benefits of a clutch delay. It retards the timing when you press the clutch, and for a short time after the clutch has been released.
1. Retarding the timing reduces shift jerk which makes shifts smoother, but more importantly protects the Dual Mass Flywheel from damage.
2. During take offs, retarding the timing reduces the chances of knock/ping on clutch release. This makes it much easier to launch without stalling (the overlap I was taking about).
3. By knowing when the clutch is being depressed, the DME can widen the range of acceptability in it's misfire detection module.
2. During take offs, retarding the timing reduces the chances of knock/ping on clutch release. This makes it much easier to launch without stalling (the overlap I was taking about).
3. By knowing when the clutch is being depressed, the DME can widen the range of acceptability in it's misfire detection module.
Here's a quote directly from the Porsche Tech archives: "The program that evaluates misfire is complex. it has to be able to distinguish between deceleration caused by rough roads, potholes, shifting, and other non misfire causes, and deceleration caused by misfire."
4. By knowing then the car is shifted (watching the clutch), the Torque Control can reduce engine braking during high torque downshifts. Here's another quote from the archives: "On deceleration with unacceptably high engine braking when downshifting, engine drag torque control (MSR) prevents the drive wheels from locking on a slippery road by slightly opening the throttle valve."
So by removing that switch, you may in fact feel some added sharpness to throttle response when shifting. Because now you have a sharper timing curve. But you will be castrating all 4 of the benefits mentioned above. To summarize:
1. You may experience premature failure of your DMF
2. You may find yourself stalling your car more frequently, and you may find that your car has less power than before, because when it preignites - the DME is going to pull the timing back and keep it back for a while.
3. You may experience a Check Engine Light, and investigation may reveal random misfire codes.
4. You may notice locking of the rear wheels after high RPM downshifts. This is most likely to be noticed on slippery surfaces like rain or snow, and it is likely to cause oversteer.
2. You may find yourself stalling your car more frequently, and you may find that your car has less power than before, because when it preignites - the DME is going to pull the timing back and keep it back for a while.
3. You may experience a Check Engine Light, and investigation may reveal random misfire codes.
4. You may notice locking of the rear wheels after high RPM downshifts. This is most likely to be noticed on slippery surfaces like rain or snow, and it is likely to cause oversteer.