I've worked in the automotive industry for years, I've never known anyone to have good luck with them. My main job at garages was tune ups, so I'm speaking from experience not just a opinion
Dan you are dead on regarding Champion plugs
I was a Product Director for Tecumseh Engines, we used Champion plugs in every engine that went out the door 5-6 million a year. Becuse they were the cheapest $ plug available. When our Engineering lab needed to perform performance testing for Hp, emissons, etc they would use NGK plugs.
I have tried to use Champion plugs in several performance engines with the same results, I always end up going to a differant brand. They just dont seem to read or perform consistently. Its obvious that others have positive results and thats cool.
