Thank you for the info. They have rave review after review (lots of hype) so I did wonder how they performed.I ran E3 on my 95 cougar, there was no difference in ET.
Its all hype, I ran them because they had a great rebate and I thought they would help a few tenths in the quarter mile.
I already got them from Amazon last week but wanted thoughts on them.Our cars have a waste spark system; any of the "fancy" plugs will wear like hell on one side.
Copper plugs need to be dressed with a file every 10k miles.
Double platinum plugs will last 100k on a near stock car.