Has anyone tried these on their boat yet? I saw them this morning on Horsepower tv and the dyno tests looked good on a modified turbo Mustang.

www.pulstar.com

Looks interesting, but at 25$ each???? Anyone find them cheaper? Looks interesting and I was just thinking of putting in a new set. Not sure if I'm interested at $400!

Here is a reference chart using different plugs with engine on a dyno, one of the plugs is the Pulstar... When you go to the link, scroll down pretty far until you see a chart posted... The difference is so little, would you really notice a difference?

http://www.m5board.com/vbulletin/e39...ark-plugs.html

every couple years someone comes along saying they have reinvted the spark plug with incredble results, splitfite, nology etc. you have to light and burn the fuel charge, whether you do it with a bic lighter or an acetelyne torch, once its lit it burns the same.

I agree if there was some break thru technology the O.E.M. would be all over it if they can get these incredible gains that easily. Just more gimmicks like the snake oil isle at the auto parts stores.

Does snake oil make your boat go faster than dinosaur oil?

What about that fake, man-made oil?

Chris

Other than the basics, plugs are plugs. Different heat ranges, and mroe expensive materials that last longer, but NONE of the fancy plugs they try to sell are anything other than snake oil.

The original Plug scam was the Splitfire. They showed some differences in dyno tests due to the fact that when you used a conventional plug gap tool, the EFFECTIVE gap was larger (due to the fact that the center electrode is not positioned directly under the ground strap). This showed up as a small but noticeable difference in combustion characteristics. However all the disadvantages of a bigger gap were still there, and you could have gotten the same benefits with 75 cent plugs gapped bigger. Many of these snake oil companies also fool with the heat range as well, which will show some small benefits on a dyno, but may result in a blown or fouled engine in the long run.

Every silly plug idea since the original Splitfire has relied off the success of the original. Funny thing is, the idiots who came up with the spitfire didn't even know why their plugs did what they did. They actually thought they worked.

The ideal plug would be as thin as possible so as not to interupt the flame front. Anything that gets in the way of the developing flame is BAD, and hence any weird plug design will always have worse OVERALL combustion characteristics. A very thin ground electrode is not possible for durability reasons.

This is actually why indexing plugs does work when the last percent is useful.

I have seen many different spark plug disigns over the years and havent seen any real advantage to any. I beleive that some of the material they are using now helps prolong the life but thats about it. One interesting thing I did experience on my own boat. I switched from a regular HEI ignition to an MSD. With no other changes the soot on my transom cleaned up by about 50%. I dont think there was any noticible performance improvment. So IMO there was at least a more complete combustion.

I would like to get rid of the soot problem that I have on one of my 525EFI's. Pulse plugs may not fix it. I'm thinking that I might have to send the EPM to be calibrated, Any idea"s?

Thanks

actually split fire didn't invent it. mazda did and ran them on the rotary's for a while and then went with 3 individual ground straps at the sides of the center electrode. i tried them on the dyno on 150 hp motors and saw no difference regardless of how i adjusted the mixture. mazda factory guy told me later it was an effort to combat fouling in the early rotaries and later a waste spark system for emissions.

the spark plugs they run in F1 motors that spin 19,000 rpm look just like ordinary spark plugs... just smaller.