I put the new splitfire platnium spark plugs in my ds and my opinion i could tell a difference. My opinion I would suggest the splitfire plug they do great. Any body else have a question or run these plugs let me know what you think.

 

I've tried them in automobiles and never noticed any change. Perhaps someone has dyno'ed these things.

 

Yeah i would like to dyno these to just to see.

 

I tried them several years ago and they may have improved since then, but my high compression motors kept blowing the gap closed on them. One actually broke the tip off - luckily it did not destroy the motor. I ran them in some stock stuff too, but I could not tell ANY improvement. I didn't dyno them, though.
One respectable engine builder explained it like this: the Splitfire doesn't improve spark, it simply splits it. He asked the question: would you rather have one strong spark or two weak sparks from splitting the fire? Again, that was several years ago and they may be the best thing on the market now, I just never gave them another chance to destroy a motor.

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