General More Spark More Bark, right?...

[BLACK'98DSM]

Would a spark plug with 3 electrodes really add horsepower like the ad says, or is it a scam? I understand that it will ignite the fuel better, but I dont see that adding horsepower, or anything more than better response...

 

[motomattx]

Its a gimmick, every couple of years a company comes out (Splitfire) and tries to gimmick up spark plugs with fancy ground straps, all they will do is end up causing a hot spot in these cars and cause knock, dont fall for it.

 

[ThunderChild]

Multiple electrode stuff is a gimmick largly as @motomattx said. Splitfire, e3, twinfire etc, typically I see advanced wear or hot spots. In the case of e3 plugs I've noticed they actually hinder the flame front from starting effectively due to the ground straps shrouding the spark and electrode.

Copper plugs seem to work the best that I've see in just about every car. They don't last as long, but they're dirt cheap so..

 

[pauleyman]

People think this is new. If you want to read up on it visit a university engineering library and find some bosch ignition books. There are whole books just on ignition theory including weird ground strap configuration. Published in the 50s by the way.

 

[BLACK'98DSM]

They have a very inconsistent spark and cause a rough idle and vibration at high rpm. Absolutely no gains whatsoever, and some negatives. Save you money and your engine and always go with the NGK's