Where did all the power go?

[plima]

Good morning all.

I filled my '04 GT3 this (Monday 12 Dec) morning at the Woodside, CA Union station with 5 gal of Sunoco 100 octane and 9.8 gal of Union 91 octane (my regular mix; always from this station). When I started my car everything seemed normal, except there is very little power. Nearly full throttle is required to get the car moving. Engine is running smoothly, just not making much power. I'm able to get up to freeway speed but must downshift for the "hills". My first thought is I got some bad/low octane gas, but it seems to me it was instantaneoulsy bad after starting the car. I'd love some suggestions before calling the Porsche dealer (Carleson in Redwood City is closest).

Update at 13:00, 12 Dec:

Final update. I just returned from Carlson Porsche with excellent news. The problem was not gas, just an incredible coincidence. The fault was the potentiometer at the accelerator pedal (the e-gas sending unit). The main potentiometer failed (according to Carlson, the first failure they have ever seen). There is a backup potentiometer in the unit that gives you workable power to get home. Carlson diagnosed and fixed the problem while I waited. Awesome service!

Edited December 12, 2005 by plima

[geza]

Clutch?