Jays
As I understand the pair of 40 DCOE's "work alone" jetting to suit Mot and jetting for the rest of the year!
A stand alone ECU is used for firing etc but does not need to be as complexed as the type used for throttle bodies, but you could use the high tech ECU just incase you don't like carbs and swop to throttle bodies!!
Old school and modern mix, carbs can use throttle position sensor or cable
