Alright, today i changed eight plugs on my dodge and four on a suzuki. I had plus twos on the dodge and bosch plus fours on the suzukis. Less than two hundred miles on the bosch plugs on the dodge and they were all black and nasty. Never had that problem with champions. The suzuki's plugs actually had NO electrodes left. They were all burnt off right from the welds. My dodge hasn't ran right since putting in those boschs. So buyer beware, ignore the marketing and the ploys. DO NOT buy bosch plugs. They are garbage.

 

I haven't had a problem out the regular ones i'm running. They are bosch but they are the single elcetrode nothing special.

 

I have bought those before and so have my friends, and we quickly learn that those suck. They run fine on imports we found out but on domestic, no dice. I have tested them my self with a spark plug chamber with the oxygen nozzel, and they only fire on one ground. If you think of it anyways, no matter what it will go to one ground.