I read the article. The camshaft pitting also has nothing to do with the vcm which is why I find it laughable. Replaced plenty or rear cams (the bank that doesn't even have vcm) when the front bank is fine. It happens on non-vcm engines too lolYou're one of the infamous mechanics they all talk about apparently. Your customers probably never heard of the muzzler either. Sad...
I really don't believe you even read that entire article...