Before suffering a crash in the first Degner in the afternoon, the circuit in October finished second-fastest at the morning session.
However, The Mugen motorist was able to come back to the track later to set a time of 1m36.215s, which would remain unbeaten following two red flags were deployed in quick succession from the dying stages of this session.
The Caution period was initiated once Team LeMans’ Yoshiaki Katayama stopped with five minutes left on the clock on track, prompting the session.
But, There were no changes at the top within an incident between Formula 2 race winner Nobuharu Matsushita (Drago Corse) caused another red flag, effectively ending the session.
Tips stayed quickest as a result, with Dandelion’s Nirei Fukuzumi finishing almost three tenths behind in second.
Koudai Tsukakoshi was just another 3 tenths adrift at the sole Real Racing entry, whilst Dandelion driver Naoki Yamamoto’s early benchmark of 1m36.900s was good enough for the fourth.
Tomoki While restraining F3 winner Sacha Fenestraz finished sixth in a Super Formula car Nojiri ended fifth seven-tenths down on his teammate.
Fenestraz’s Teammate Kenta Yamashita, who has moved across from Team LeMans for the test, was next up in seventh, ahead of B-Max using Charles Milesi and Motopark duo Lucas Auer, along with Tadasuke Makino’s Nakajima Racing automobile.
Newly-crowned As Toyota-powered automobiles were visibly off the pace in contrast to their Honda-engined competitions, super Formula champion Nick Cassidy completed 17th for TOM’S.
The Post-season Super Formula test continues with just two sessions, on Thursday Of two hours each scheduled on each side of the lunch break.