Removed the E3 plug my buddy recommended and put the NGK Iridium that has 800 miles on it back in. Threw the E3 in the trash. I won't even give it away. Reasons: Hard starting, dies during warm up, poor idle, flat spot near WOT, sooty like it's rich. And it is the plug 'cause the NGK is easy to kick start, doesn't die during warm up, solid idle, doesn't have the flat spot, and is a nice grey.