At Budapest Lotus were certainly sounding bullish. The double DRS system that they succesfully tested at Hockenheim and Hungary practice sessions is expected to be fully used at Spa GP... maybe someone can confirm it but Im pretty sure I remember Boullier say that they expect to win there. Q: "What will be your homework for the next races? Where can you improve?" EB: "We have a big upgrade we would like to see working on the car after the shutdown. So you could call this race some kind of test. The most visible change has been the new wing on Kimi’s car but there are also a number of changes on Romain’s car. And we want to see what these changes will bring us in terms of race pace. From Spa until the end of the season we hope that we will have the whole package up and running and it will help us defend our position." (3rd place in constructors) Full interview here- Boullier