Long story short, your friend is full of shit.My friend and i are deabating on if the M.S.D 6A multy spark distributer module belongs on my truck. He tells me that it shouldnt of been put on my truck.I read the descprition on the M.S.D website and all it says is that it for better spark,and quicker ignition. He keeps telling me that the M.S.D is over riding the main computer. He told me that i have to get a new wiring harness and rewire everything? Doesnt make sense to me so i know hes on this site and can you or someone explain in detail what this does and what are the pros and cons to having this module on the truck? I personaly think that its not effecting the truck but make it buner the fuel better. it was put on the truck last year and never had a problem with it. He is telling me that this module is use for a motor that has a compression higher than 10.1 and its for a high compression motor.
thank you all