Stephane Sarrazin kept Peugeot in front in the final free practice session ahead of Petit Le Mans qualifying, but Allan McNish produced Audi's best performance of the weekend so far in second.
After Peugeot had been first and second in all three of yesterday's session, McNish raised hopes of a strong Audi challenge by grabbing the top spot in the middle of the hour and setting the fastest time all week in the process.
Sarrazin eventually got the No. 08 Peugeot down to a 1m07.678s to beat McNish by 0.162sec, with the second Peugeot only a further 0.014sec back.
The De Ferran Acura beat the No. 1 Audi to fourth place, and was the only LMP1 Acura on track as Highcroft got on with the task of building up a new car after Scott Sharp's ferocious crash yesterday afternoon.
The No. 20 Dyson Lola-Mazda finally racked up some miles following its earlier engine problems, and set the fastest LMP2 time ahead of the Fernandez Acura and the Cytosport Porsche.
Rahal Letterman's BMWs were one-two again in GT2, despite Joey Hand spinning into the gravel late on. That caused the second red flag of the morning, the first having come out when Dominic Cicero beached the Falken Porsche.