Originally Posted by Doug
"And all the cool kids run NGK BPR6EY Spark plugs!"
Those are hotter plugs than stock. What about pinging? I'm caught between rich and ping. Yeouch. I went all the way up to 9s but they fouled. Backing down now and retarding timing to keep the ping down.
I suggest a cooler plug, like Champion RN11YC, and a bit more advance.
Exotic plugs don't provide a benefit on these vehicles. The people who tell you they got "great results" with exotic plugs in my experience turn out to have other running problems that the exotic plug helped overcome. A good LR 14CUX engine just won't show a real benefit from them.