Lotus driver Romain Grosjean admits that he has yet to show his full potential so far in 2013.
Grosjean finished in tenth place in Australia and followed that up with sixth in Malaysia. He sits in eighth place in the championship.
"It’s been a little frustrating as I don’t think I’ve shown my full potential yet," he said. "The first two races were quite difficult for me and I would really like a weekend where I can show what myself and the team can do this season. We’ve got great potential, I just need to unlock it. Hopefully we’ll find the key in China."
The Frenchman was plagued by an issue with his Lotus E21 in Melbourne but nonetheless feels that the team has made progress.
"We have definitely made progress. It’s been frustrating for me as sometimes the car gives me what I want and sometimes it doesn’t, even if the conditions and setup are very similar".
"I’ve been working closely with my engineers and we made good progress over the last race weekend. The car and the latest tyres seem to be very sensitive to having the balance exactly right so that’s what we’re focusing on."
Team principal Eric Boullier adds that Lotus can now rely on Grosjean following his difficult 2012 season.
"Romain hasn’t been able to get the car immediately to his liking and that is never beneficial for a driver. He’s compared with Kimi, who has a tremendous amount of experience at knowing what he wants from the car and how to get it."
"While Romain struggled in Australia, we saw a strong drive from him in Sepang. During the race he managed the strategy well, raced hard, and I think he also demonstrated that the work he’s done over the winter has paid off. He has proven that we can count on him."
Grosjean should be boosted by running Lotus's latest exhaust specification and bodywork, parts that were only fitted to Raikkonen's E21 in Malaysia.