Qualifying sixth in his group, he started the race 11th, pushing up to tenth by the end of the first lap – managing to avoid Ben Hanley’s barrel-rolling car along the pit straight.
He was up to seventh when the time came for pit stops, and held that position to the end of the race.
The reverse grid rule meant Walker started race two from fourth place and after being pushed down the field on the first corner, he fought his way back to seventh.
However, just a few laps from the end of the race Walker’s wheels locked as he braked for the chicane, causing a spin which knocked him down to finish 20th.
‘Pace-wise this has been our most competitive weekend,’ said Walker.
‘I’m obviously not happy with the race two result but I’m very happy with our performance and I think this has set us up for a good finale in Barcelona.’ The Spanish races conclude the series this weekend, and having tested at the Circuit de Catalunya earlier this year and enjoyed the challenges of the Spanish track, Walker added: ‘It’s a physically and technically challenging circuit.
‘I liked it a lot when I tested there and from a physical perspective it will be a great test of our strength as it takes place just a few days after Estoril which was a tough track.
‘I’m loving my racing more than ever and I really want to go out to Spain and get the kind of result that will set us up for all the work we need to do over the winter to prepare for 2008.’