IndyCar approves Lotus upgrades

Lotus has been granted permission by IndyCar to make performance-based upgrades to its engine to help it close the gap to rivals Chevrolet and Honda. Series regulations provided one mid-season window in which manufacturers could submit a request to make performance upgrades to components that are otherwise frozen. According to the rules, the manufacturer must be able to demonstrate that has more than a 2.5 per cent deficit in power in order for its request to be considered.

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