The R90CK was notable for achieving the highest straightline speed on the Mulsanne Straight at the Le Mans circuit following the installation of a sequence of tight serpentine curves (chicanes). Mark Blundell reached at 366 km/h (226.9 mph) on his pole position lap - 24.2 mph less than the previous record trap speed without the chicanes in place. The qualifying engine, normally capable of up to 1000 bhp, had a mechanical issues leading to the wastegate being jammed, leading to an engine which produced well over 1100 bhp. Bob Earl took the fastest lap during the race in the NPTI car at 3:40.030 This trap speed record with the chicanes in place still stands to this day. Even with this performance, Nissan would not return to Le Mans with their prototypes following their departure from the World Sportscar Championship at the end of 1990, until their front-wheel drive effort in 2015.