Click here for full WEC FP2 results for the Shanghai 6 Hours
The two Porsche 919 Hybrids have fought back in Shanghai having lagged behind Audi in the opening free practice session, with the World Endurance Championship-leading #17 of Mark Webber, Brendon Hartley and Timo Bernhard setting the pace.
After a relatively slow start by the Porsche LMP1 machines the team dialled them in to the Shanghai International Circuit, with Webber setting the fastest lap of the day of 1m 45.111s – over two seconds under the existing lap record set by Allan McNish in 2013.
Webber's time kept the #17 Porsche ahead of its sister car driven by Neel Jani, Marc Lieb and Romain Dumas by two-tenths of a second while the Audi's were left trailing in third and fourth respectively. The #8 Audi of Loic Duval, Nicolas di Grassi and Oliver Jarvis found over 0.8s to take third positon on the FP2 timesheet but #7 Audi's fastest FP1 time of 1m 45.707s saw them stay third fastest overall.
Both Toyota's continued to struggle to catch the German manufacturer machines in fifth and sixth, while the #13 Rebellion Racing R-One lead the privateer LMP1 category.
In LMP2 the #47 KCMG Oreca 05-Nissan, which has picked up a penalty for its part in the clashes with G-Drive cars in the Fuji 6 Hours, topped both sessions to pull out a tenth on its nearest rival Signatech Alpine Nissan.
In the GTE-Pro class it was a case of a AF Corse Ferrari fightback with Davide Rigon and James Calado setting the early pace with a 2m 03.028s after the Porsche Team Manthay of Pilet and Makowiecki had topped FP1.
It became a double scoop for Ferrari machines, with the SMP Ferrari 458 Italia driven by Shaytar, Basov and Bertolini taking top honours the GTE-Am category.