Sauber has revealed that it is planning a big upgrade to its Formula 1 car for the Singapore Grand Prix, which should help it capitalise on an engine boost coming after the summer break. The Hinwil-based team is currently seventh in the constructors' championship standings, but has not scored any points since the Monaco Grand Prix in May. It hopes, however, that a switch to Ferrari's upgraded engine for the Belgian Grand Prix should deliver it a good step forward, with the later car tweak hopefully pushing it back to regularly fighting for points as it did at the start of the campaign. Sauber team principal Monisha Kaltenborn said she believed the team could rediscover the kind of form it...
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