We need a tidal wave of change - Bell

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ING Renault F1 Team's Technical Director Bob Bell wants to make some major changes to the R28 in order to catch up with Ferrari, McLaren and BMW by the end of the season. The team is set to introduce a major aerodynamic update during the three-day test session at Barcelona.

Bob Bell said: "I think just needing to improve is a bit of an understatement. We need a tidal wave of change to move us back where we want to be, but that's what we're here to do.

"Our biggest issue is the car's aerodynamics, but there are also mechanical improvements we can make. We've got some big steps to make and we need to make them in big moves. Lots of little ones are no good because we don't have the time. We need to have a very sizeable step up and make that first step in Barcelona."