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TomNauntonMorgan

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I have just done yet another advanced airfield driving day. As with my last Boxster this is very helpful to know when you are going to lose it and what to do in the event.

The new car, 987, disconnects the accelerator when braking so its not possible to keep up the revs with left foot braking. Apart from this racing down side, you will loose traction on a gentle bend at about 65 mph unless you use trail breaking etc.

The car is more powerful than you think and is just as quick as a 996 C4 cab around the circuit.

Its completely safe on the airfield so I don't bother with insurance, as there is nothing to hit as only one car is on at a time. No stone chips as you are not following anyone etc.

Tom
 
Sounds like a fun day out.

I was a bit annoyed when I found the car lurch as the disconnection happened under braking (left foot). Luckily it doesn't cut out straight away so there is plenty of time to hell 'n' toe.
 
Yike!

I always heel & toe, and I never noticed it in 2 days with a loan 987 (whilst my 986 was being re-rms'd)
 
I never noticed it in 2 days with a 987
Click to expand...

I presume the power is cut only if there is drive to the wheels? When you heel 'n toe, the clutch is down so you can operate the brake and accelerator simultaneously. I alway h 'n t and have never had any power interruptions on the 987.
 
You might be right - I double de-clutch as well and the power is still removed from the wheels as you are in neutral in the "blip" phase.
 
When you slam on the brakes with your foot flat on the floor, as I do all the time, the accelerator is disengaged.

A Porsche safety feature. Also going backwards with your foot on the brakes stops the fuel supply so that the
engine stops. This however is old hat as my 944 Turbo did the same.

Tom
 
ORIGINAL: Mark Bennett

You might be right - I double de-clutch as well and the power is still removed from the wheels as you are in neutral in the "blip" phase.
Click to expand...

A test drive on the South Circular yesterday confirmed this hypothesis! Clutch down - brake and accel are operable together. Clutch up, braking kills the throttle opening.

I too double de clutch as a legacy from a Caterham I used to have which had a worn 2nd and 3rd gear synchro - it was the only way to get it into gear when on the move. I'm so used to it I do it all the time plus it is about the only enjoyment I get when driving the car in London!!
 

ORIGINAL: thboxster

Sounds like a fun day out.

I was a bit annoyed when I found the car lurch as the disconnection happened under braking (left foot). Luckily it doesn't cut out straight away so there is plenty of time to hell 'n' toe. 
Click to expand...

For more details on this, see
http://www.renntech.org/forums/index.php?showtopic=548
 
From that link it appears the throttle is only cut after 1.5 seconds of braking, therefore heel-and-toe etc will not be affected.
It would appear the modifications in that thread all result in a Check Engine Light (which will need a trip to the dealer to re-set). I can't recommend trying it!
 
Ivor, depends what you mean by performance driving.

For limit handling, Don Palmer is recommended by many.

For road driving, check out one of the following:
Hugh Norblet - Cadence,
John Lyon,
Mark Kendrick, and
John Cave.

I've driven with all of the above except Don, and all have something to offer - different approaches but all excellent coaches.
 
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