Thanks Rosco for all the info!

I'm not very knowledgeable on the different spark plugs that you mentioned.

I know that Champion used to use the letter R on the beginning of a part number to designate a resistor plug. I've never actually tried measuring the resistance from the electrode to the top of the plug, so I'm not even sure what a resistor plug would measure. I should grab a meter.

Aaron, a far as watching the videos, they are mjpg. I also could not get any of the videos to play in the browser. What did work was an older version of winamp and the old windows media player 6.4xxx. (mplayer2.exe on xp machines). You will most likely also need a proper video codec. A good place for these is free-codecs.com. I can't tell you exactly which codec it is using, because my machine has had so many different ones installed. I'm sorry I can't recommend a single codec, and I don't want you to install the all-in-one packs because they install a lot of stuff. They do have a mjpeg codec, which would probably be a good place to start. Sorry for the long post on codecs.

I'm going to go measure some plugs!

Duane

I checked a few plugs and they were all resistor plugs, ranging from 2k ohms to 33k ohms. I am pretty sure that the Firestorms are not resistor plugs.