I have tried almost every brand of spark plugs in my mopars. I can’t really say there is a difference either way. And yes I’ve used hundreds of Champions. Kim
Correct. The biggest deal is heat range and tip style. After that, the Champion is by FAR the easiest to read. Small changes show up quicker and are easier to see. I can tune with any plug, except those with a black shell. The Champion is by far the easiest to read, and the easiest to get to light with a weak ignition.
