There is an old racers trick where you cut the ground strap back to center of the electrode which opens up the flame kernel it is worth a few tenths on the track so it does in fact work by creating a more complete fuel burn.. That in turn should help a touch on fuel economy, less going out the tail pipe unburnt means more push down the road.. Just my Opinion..

 

I installed Pulstar platinum plugs into a 2008 Ram 1500. They work well although the plugs I removed had 50K on them so any new plug would have shown a performance increase. The cost was $9.95 per plug or $160 total, a far cry from the $400 I see posted on this thread.
Changing the plugs on the 5.7 Hemi is time consuming but not hard to do.

 

edit:

dont care about old post.


for clarification purposes though:

pulstars have a very small condenser in each plug (same as would be found in a points system) that allows the flame kernel to be the same size from moment of ignition through the first 1/2 of its duration, then it acts as any other plug and wains out to nothing.

this is worth nothing in a street car (truck) with a modern coil on plug ignition.

 

I wish I had that kind of money to burn on gimmicks