HELP!! Slow down light coming on!! Please help 2 day old FCar owner!! :-)

I had a similar problem in my Mondial QV. This particular car has 2 cats, 2 ECUs and 2 warning lights. I kept getting a random 5-8 bank "slow down" warning, but it often happened when the car was stone cold, so I knew it was a false error. Fortunately with 2 of everything, it was easy to swap components around until I found out if it was the sensor, or the ECU. Turned out a I had a bad ECU. I removed it from the car and there is no way to service it...it's completely potted in epoxy. Wouldn't you know it, another Fchatter had a spare and he gave it to me. Is this place full of great people or what?

Congrats on your new 328.

Birdman