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Old 11-23-2007, 08:27 PM   #11
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Originally Posted by willwren
Power in Watts is Voltage multiplied by Current.

How can that plug produce 1 million watts of power if a typical plug only delivers 50W? There'* some funny math here. You're still feeding it from the same source, so where'* the magic energy coming from? Are they averaging it over a short period of time during the pulse duration only? Probably. I'd rather have a longer duration spark to ignite the flamefront in my cylinders. Seems to me besides price that the only choice is between one long spark at a lower intensity or a bunch of pulses that average out to the same when you factor in the on time and off time of the pulse.

Ok. On their horsepower link, they never state what percent or how many horsepower you will gain. But they do state that you spend $8 per horsepower with their plugs.

They also claim 6% fuel economy increase over standard plugs. do they mean the old plugs you replaced? But wait a minute.....they don't actually CLAIM a specific gain. Look at the information carefully. They state:

6% better fuel economy pays for Pulstar in just 12 months
they say the fuel economy savings CAN put money back in your pocket. Sure it can. But how much do the plugs save?

They FINALLY get to some numbers on the Test Results page, and I find them very hard to believe. It'* the energy of the explosion of the compressed air fuel mixture that produces power. Not the spark that creates the explosion. Sure you need a complete burn, but if I'm getting good combustion now (no fouling), how much more can these do?

Call me a party pooper but at TWENTY FIVE BUCKS EACH you can count me out!

Spark plugs aren't power adders. I'll move the topic to General Chat for you.

Lets not forget they are $24.95 Each.... Sounds like a pretty big scam to me.... I'll stick with my TR55'*

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Old 11-23-2007, 10:12 PM   #12
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Originally Posted by popatim
Originally Posted by willwren
That'* the key. If the supplied voltage from the coil is the same, how do you increase from 50W to 1 MILLION Watts?
Its watts not voltage.
50w for 30microsconds is .0015watt-seconds
1,000,000w for 2nanoseconds is .002 watt-seconds.

The math almost works; but not quite.

The unknowns are spark voltage, which I assume would get reduced, gap, and resistance of the plug. I don't see how they could keep the stock gap off hand.

Drunken-Sailor do you have a link to that writeup? I wouldn't mid reading it. - Thx.
They don't SAY watt/seconds though. They infer just plain WATTS. And a spark of that extremely tiny duration? No thanks.

I went through the 'buy' process. They tell me not to gap them over .045" on a 3800. They suggest stock gap or .045" whichever is SMALLER.
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Old 11-24-2007, 08:04 PM   #13
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And a spark of that extremely tiny duration? No thanks.
X2 !!!!
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Old 11-25-2007, 02:18 AM   #14
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Here'* my little rant from GM-Trucks.com:

As with many products these days, the advertising is spectacular but the science is pretty shaky. The automotive industry is rife with brilliantly marketed crap.

Their biggest argument is that their plugs produce more wattage than conventional plugs. They say as high as one million watts, compared to around 50 watts for conventional spark plugs. This is where you enter a grey area with "proving" the science. Remember, Watts = Volts X Amps. The voltage we will assume is the same, because the vehicle ignition coil is only capable of a certain voltage. The amperage, however, is dependent on resistance of the secondary circuit. The resistance comes from the plug wires, the resistor in the plug, but mostly, the plug gap, which is in sense an infinite resistance. Remember that "grey area" in the science that I mentioned? Here it is. While any gap is an infinite resistance, we all know that when a certain amount of voltage is applied to that gap, it can be ionized, or "bridged". This is how we get our spark. The smaller the gap, the lower the voltage required to ionize the gap. It makes sense that while any gap is technically an infinite resistance, it can be argued that a smaller gap has a lower "resistance" than a larger gap.

Back to the Watts formula. You'll notice that on their website, when you look up plugs for our truck, they specify a 0.045" gap. Our trucks call for 0.060", but they say to go no larger than 0.045". Obviously, a 45 thou gap has a much smaller "resistance" and required voltage than a 60 thou gap. Amperage = Voltage/Resistance, so with voltage being the same (remember, the coil only produces so much) amperage in the circuit goes way up with a lower resistance. Which in turn means MUCH higher wattage.

Basically, what I'm getting to is that the radical increase in wattage isn't due to any remarkable new technology, but simply due to a smaller plug gap, something you could achieve without spending a penny.

But let me shoot this down a little more. Do you want higher wattage? The answer is no. The only important number when it comes to secondary ignitions is voltage. The amperage in a secondary system is minuscule (less than one amp). A certain amount of voltage is required to ionize the gap, and the rest of the voltage available is used to keep the spark going across the gap. For example, if your coil produces a maximum of 40,000 volts, and the required voltage to ionize the gap is 20,000 volts, the other 20,000 volts is used to keep amperage flowing across the plug for 1-2 milliseconds. And this is the very most important number in ignition This "burn time", as it is called, is required to completely burn the fuel and air mixture as it swirls in the combustion chamber. This is why cars run bad when the plugs wear. More of the coil'* voltage is used to ionize the increasingly larger gap, and less is left to keep the spark going for the required burn time. We call this "running out of spark".

Herein lies another major flaw in the "science" of pulse plugs. They claim that there is no burn time with their plugs; that the air/fuel mixture is instantaneously ignited due to the "sheer power" of their spark. More crap. Not only is this not possible, but remember, only the amount of voltage required to ionize the gap will be used. No more, no less. Even if this would actually be beneficial, their spark can't possibly be any more "powerful."

I'll bet my next paycheck that the only reason anybody is seeing gains with these is because they are replacing old, worn out spark plugs. New conventional plugs would yield the same results.

Ah, the beauty of marketing. Clever, isn't it?

EDIT: Thought I should add that three members of GM-Trucks.com have tried the Pulse Plugs now. One noticed an improvement in fuel economy, but he replaced old Bosch plugs, and as I told him, any other plug would have made an improvement. Another member noticed no difference and the last member has a bad misfire that forced him to reinstall the old plugs.
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Old 11-25-2007, 03:23 PM   #15
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I am putting these plugs next to this: http://www.electricsupercharger.com/ for stupid gimmick of the year award
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