I’m running twin 40s which were set up via rolling road,revs well,pulls well but when sat at set speed ie 70mph it stutters like a missing/hesitation,tried new plugs but no different,any ideas
I’m running twin 40s which were set up via rolling road,revs well,pulls well but when sat at set speed ie 70mph it stutters like a missing/hesitation,tried new plugs but no different,any ideas