The FIA have written to all teams to inform them of a new clampdown on engine modes that increase exhaust flow in corners. 'Trick' engine modes have been brought to the FIA's attention again after Renault's blown rear wing came under scrutiny before the season opener in Melbourne. A mysterious third paddle has also appeared on Sebastian Vettel's steering wheel at Ferrari, with speculation mounting that the Scuderia have found a way to produce a performance boost by altering the car's settings. Ferrari had tried to keep the third paddle hidden but eagle-eyed photographers have noticed the new addition in the last couple of races. FIA's head of single seater technical matters, Nikolas...
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