Over the years, I have seen all kinds of weird sparkplugs touted (as a way to get more power, better gas mileage, etc.). People have come out with multi-electrode types (Bosch), those “splitfire” forked electrode types, and those gapless types (haven’t seen those in a while).
But really, if these special sparkplugs had any real benefits, why would’nt car manufacturers jump on them? The ads for these things are pretty coy-they always make claims, but no proof is furnished.
So: has any thing new come out in sparkplugs, that offer any real benefit over the standard types?
Spark plugs that the car makers are putting into engines today are not the same plugs as was being installed 30 years ago.
Dual, triple and even 4 electrodes are common now in an effort to prevent misfires.
Are any of the car makers using super duper xyz technology from Bubba’s spark plug company? If they are, I haven’t seen any information confirming this.
Multiple electrodes and the use of high melting point metals like iridium do nothing for performance but they prolong spark plug life. Back in the day you had to check the gap every 10,000km or less and replace at 20,000-30,000km. Nowadays you can keep the same spark plugs for a minimum of 60,000km and those made with iridium do no require setting the gap.