What spark plugs should I use? Matt May 23, 2018 18:27 Follow In most cases, the stock spark plug and cap will work great. For heavily modified motors, consult with your engine builder for their recommendations, as incorrect spark plug may result in severe engine damage or loss of performance. Related articles What coils should I use? What type of spark plug wires should I use with the Dyna 2000 ignition? What type of spark plug wires should I use? Dynatek Downloads Why does my Dyna S spark continuously when I am charging the battery? Comments 0 comments Please sign in to leave a comment.