
Connor De Phillippi, who set fastest lap en route to the M Hybrid V8’s runner-up spot at the Californian street track, revealed that a major problem was encountered in opening practice and needed software for its hybrid system to be rewritten for the #25 Rahal Letterman Lanigan Racing-run car to function properly.
The LMDh machinery runs with a common hybrid system, but the software for the electronic control unit is completely open and has been a huge area of development to keep the cars running properly.