Best "gimmick" plugs?

[jkasch]

So, I guess e3's are gtg in OPE and Top Fuel.

 

[cos]

The E3 plugs improved power in this high performance V8:



As for the E3 in my Toro mower - no complaints.

 

[LeakySeals]

I just watched project farm's video. Was surprised that the Pulstar was more fuel efficient than the NGK laser iridium during the test.