Felix lapped the spectacular Algarve venue in 1m32.386s behind the wheel of the Team Sweden machine, grabbing P1 by almost seven tenths of a second ahead of 2011 Formula 2 champion Mirko Bortolotti (Team Italy).
Nigel Melker, Team Netherlands, was third.
A second 30-minute free practice session will take place after lunch, with the first-ever FA1 pole position then set to be disputed in qualifying later this afternoon.
- Video: a tour of Team Sweden
- Felix: Portimão circuit “great fun”
- Video: Team Sweden pit stop practice
- How to follow the FA1 opener