(英語の勉強) An ECU of my Caterham JPE as originally is Weber Alpha, but exchanged to EMS EM-70 on March 2019. Today I drove a JPE to Watarase retarding basin, and air-fuel ratio is around 13% in 2000 rpm. It's just a little more gasoline than the ideal condition, but fuel economy seems a bit poor at 7.9…