The next year he finished sixth in F3 Euro Series and won a pole at the Macau Grand Prix.

In 2007 he continued in Formula Nippon and made two starts for A1 Team France in the A1 Grand Prix series in Australia and New Zealand.

1 driven by Duval was severely damaged, casting doubt whether it could be repaired for the race, or if Audi could build a new car in time, which would start from the back of the field.

He replaced Oriol Servià and partnered Jérôme d'Ambrosio at Dragon Racing, an American and former Indy team.

Duval finished the season in 9th position with 42 points having raced in seven of the eleven championship rounds.

Duval's contributions helped Dragon Racing finish 2nd in the Championship having spent the majority of the season outside the top five.