The new GTP era has seen the IMSA WeatherTech SportsCar Championship embrace the LMDh rules, attracting BMW and Porsche to join Cadillac and Acura in the top class of U.S. sportscar racing. However, the introduction of a spec hybrid unit has inevitably caused teething problems for all the OEMs, so debuting the technology in IMSAs longest race of the season has caused worries over ... Keep reading
