Ignition/Tuner/ECM/Fuel InjectionNeed advice on ignition issues? Questions about a tuner? Have questions about a EFI calibration or Fuel Injection? Tips on Engine Diagnostics, how to get codes, and what they mean. Find your answers here.
Gonna change my plugs. What is the differencebetween the HD 6R12 and the 6R12G plugs? Any advantage to using the G series as opposed to the standard plug. Any disadvantages. Just curious?