Renault are now confident that the problems which plagued their new power unit during the opening test in Jerez are now behind them. The French supplier endured a nightmare after its customers could only complete minimal running over the four days, with its main customer, Red Bull, able to complete just 21 laps. Remi Taffin, head of trackside operations, is however optimistic that then changes they've made "should" allow them to enjoy relatively problem-free running at the next test in Bahrain. "We were facing hardware issues, and consequently also software issues," he is quoted as saying. "We had good [hardware] upgrades that we could test either on the dyno or on...
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