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Not only does the design do the opposite of what they claim (it shrouds the spark), I had a friend who put them in his Volvo XC90. Part number/heat range directly from the E3 web site. Plugs fell apart, pieces inside the cylinder smashed valves and head. $4000.00 repair bill.
A friends brother was an engineer with GM when all these multi-ground electrode plugs were coming out. We were talking about them one day and he put it this way.
A manufacturer can spend a million dollars on R&D for a 1 % gain in fuel economy. if a spark plug could yield the claimed fuel gains, every car coming out of a factory would have them.
Had them in my 2000 Bonneville SSEi and my lawnmower (different plugs, same time period) lawn mower didn't run, changed plugs, ran great, SSEi had misfires and ran poorly. 2 of the POS plugs were broken, 1 unscrewed itself in half- never saw that before- almost as if the AZ counter guy was getting a commission.... They will NEVER see the inside of any of my engines
A friends brother was an engineer with GM when all these multi-ground electrode plugs were coming out. We were talking about them one day and he put it this way.
A manufacturer can spend a million dollars on R&D for a 1 % gain in fuel economy. if a spark plug could yield the claimed fuel gains, every car coming out of a factory would have them.
Depends. There is a performance gain from the suckers buying it if you are the company selling it. If you are the user, you will feel the performance gain especially if you use their sticker on the car. It is worth 10HP at least.
Seriously, I wouldn't. If you are racing for a prize purse, I'd say try anything and see. Even if they gain 1 thousandth of a second, it is worth it for them. For you, not so much.
I tried them once are was not impressed. I believe that you will get more power increase and millage increase from properly indexing a set of AC Delco or NGK plugs. For the record I'm not a fan of Platinum plugs either. Good old school copper plugs transfer voltage better with less loss then any of the exotic materials. The trade off (there is always a trade off) they wear out quicker and you have to replace them a lot more frequently. Not a big deal for me because I do them myself. It's not that hard.
I tried them once are was not impressed. I believe that you will get more power increase and millage increase from properly indexing a set of AC Delco or NGK plugs. For the record I'm not a fan of Platinum plugs either. Good old school copper plugs transfer voltage better with less loss then any of the exotic materials. The trade off (there is always a trade off) they wear out quicker and you have to replace them a lot more frequently. Not a big deal for me because I do them myself. It's not that hard.
Thing I don't like with the long lasting ones is that I prefer to see the plugs to check for oil fouling. That is why I toss them every year. Also, I get to make sure that they don't seize up in the head. BTDT and absolutely hated that. I had glow plugs in a diesel car that seized. After a couple of head pulls later, I did them every year and cleaned the threads with anti-seize and stuck a reamer to clean out the "carbon condom" in the chamber, crank a couple times to blow out the dust.
Bet you wouldn't say that if you were a seller or manufacturer of that unique performance enhancer.
Very true, they have done a great job marketing. Most people don't care to understand the technology so they just buy them and try.
Same thing was true years ago when Bosch came out with the triple ground electrode plugs. Everyone figured more ground electrodes must be better and bought them.
I installed them in my 85 six ago and they're still working fine, mind you they only have about 5000 miles on them. I noticed a slight increase in power, nothing to write home about. Start ups are definitely quicker and smoother tho. I only bought them because I found them on sale and they were cheaper than the stock AC plugs at the time of purchase. If I had to pay full price for them, I probably would of not tried them.
Very true, they have done a great job marketing. Most people don't care to understand the technology so they just buy them and try.
Same thing was true years ago when Bosch came out with the triple ground electrode plugs. Everyone figured more ground electrodes must be better and bought them.
That's the marketing scheme. Make it cheap enough that the fools will give it a chance and not ask any questions. They also depend on carefully weeded or shilled testimonials. A fool and his money are soon parted and rightfully so since that is the order of things, IMO.
I installed them in my 85 six ago and they're still working fine,
I noticed a slight increase in power, nothing to write home about. Start ups are definitely quicker and smoother tho.
What does "fine" mean? If it means "I have not noticed anything wrong based on the SOTP dyno.", I could agree since the ECM does compensate for quite a bit of stuff.
I wouldn't write home either since what you have noticed is SOTP increases and they seem to come with the product. When I hear of feeling power increases, I think of "PLACEBO EFFECT" and am very skeptical that there is.
I cured the wife's headache by weighing her glasses. Old pair was smaller and lighter. New ones pressed on her nose enough to maker her uncomfortable. They were twice as large so they had to be much heavier. Took her and both pairs of glasses to USPS and the old one was a bit heavier. Henceforth, she didn't feel anything bad.
I never trusted the commercials, waaay too much hype.
They always seemed to lay it on to thick, that and the "results" sounded way to optimistic.
Also the multi ground electrode plug has been around for a long time.
they were OEM for my RX-7, but mostly due to the fact the engine burned oil by design...
One plug idea i like is in my boat, OEM mercury plugs are NGK with no ground electrodes, instead it grounds to the body of the plug, has a fixed gap that way.
Very resistant to fouling from the 2stroke, also super easy to clean!