SPARK PLUGS????????....Question
 

Got 500 EFI's with AC "MR43T" plugs. A friend suggested the new Bosch plug for high performance engines with quad tips.......I could not get any cross references to the plugs or any info at the Bosch site. Any info or input ........would be greatly appreciated.

NOT NEEDED-- Those multi gap plugs are for forein made engines that have weak ignition systems.

my $.02
 

If I remeber right I read somewhere that all those multiple ground strap plugs are more of a gimmick than anything else. Sure sounds good in advertizing and looks cool, but how much benefit?????? If you place these plugs next to a single strap plug you will probably notice the electrode tip is extended from the plug base. This exposes more of the spark to the air/fuel mixture for a more complete burn/ thorough flame front. You can purchase extended tip plugs without the exotic price. Besides, in a boat application I seriously doubt you would notice any perf differences. (Dyno - maybe, H2O - probably not)

Anyone else with experiences to prove otherwise, interested to know if there is a difference?????