Hi all:
Here is my odyssey.
Mi emissions/safety inspection sticker expired, hence I drove to NYC for the tests.
(car is registered there, I am near Raleigh, NC). Great drive, 7 1/2 hours.
Test is done in a dynamometer, with a sniffer in the exhaust.
GOOD NEWS
Results:
HC limit 0.80 Car 0.29 (passed)
CO limit 15.0 Car 2.7 (passed)
NOx limit 2.00 Car 1.21 (passed)

Drive back yesterday - BAD NEWS
New Jersey - Blizzard conditions, but no problems.

Delaware, right after the toll for the bridge, car goes into limp mode.
(400 miles away from Raleigh, snowing, sleet, freezing rain, 29F, windy and Sunday)
Car has no response to gas pedal, cruising at 5 mph on I-95. Pull out at nearest exit
stop at Mobil gas station, pour some STP gas treatment/water removal, and fill up
with super+. Car idles like crap, all of a sudden, it is fine.
So I decide to take my chances, run like a rocket, go up the ramp to merge onto I-95
south. Right before merging, try to accelerate - NOTHING -.
Holy S@#$!!! there is a truck coming at what seems 100 MPH in the right lane, and I am
limping at 5 MPH. I pressed that gas pedal so hard, I thought my foot was gonna go thru
the floor. Nothing. Truck is flashing every single light is has (like 1000 of them).
His horn sounded like it was in my headrest. My foot is on the floor 1,2,3 seconds
(feels like an eternity) truck is approaching fast!!!.
God takes over and my car redlines, takes off faster than I have ever seen it.
WOW!!, it is freezing outside, windows open (29F) and I am sweating bullets.

Maryland went without problems.

Washington DC - Virginia (beltline I-495)
Doing 70 MPH center lane. Try to switch lanes to pass on left. No response, economy gauge
is red line, but car is actually losing speed. Oh NO!!
Wiggle my way to right lane, 65, 60, 55, 50.....5 MPH with no gas pedal response.
Stopped in shoulder, idles like crap. Wait 10 minutes, press gas pedal and nothing.
Well, I will limp until next exit (so I think). Let the car roll, try to accelerate,
it stutters, hesitates, a couple of thumping/bopping sounds coming from the engine
(NOT BACKFIRING, from air intake?). It "catches full power" releases, catches, releases
and finally takes off like nothing ever happened.
It did it once more in Virginia (40 miles from NC border)

North Carolina - Flew by at 85 MPH without problems.

By the time I got home (12 hour trip), I was more stressed than Saddam Hussein. Perhaps
like Osama must be feeling right now.

I just drove the car 80 miles to Fayetteville, it appeared to hesitate after filling up.
But just for a second.
Now I turn to you for help.
WHAT IN HEAVENS WAS THAT ABOUT?
What should I look for?

__________________
1999 Porsche 996 Carrera Convertible
1994 420E - SOLD
1986 300E - SOLD, what a car
609 Certified