kemo R.I.P Jan 19, 2009 #1 When you change cams and air filter and rejet the carb and use free flowing mufflers do you have to change the spark plug heat range
When you change cams and air filter and rejet the carb and use free flowing mufflers do you have to change the spark plug heat range
G glider Veteran Member Jan 19, 2009 #2 It shouldn't be necessary unless you have a problem with plug fowling because of the cam choice.
