A lack of power unit performance was a handicap for the Alpine team last year, when Renault's Viry-Chatillon powertrain division was focussed on a major upgrade for this season, including a move to a split turbine and compressor arrangement for the first time.
Szafnauer says that his colleagues have done a "brilliant job" in closing the gap.
"We think we've made a step on the power unit," he ...
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