Iguchi and Yamauchi went into last weekend's Motegi finale hoping to become the first ever crew to score back-to-back GT300 titles, but ended up 20th at the end of a race for forget for the R&D Sport-run team.
The weekend began badly when Yamauchi crashed in qualifying, leaving he and Iguchi starting 16th and facing an uphill battle to overturn the 2.5 point lead held by Kondo Racing pair Joao Paulo de Oliveira and Kiyoto Fujinami.
