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Directory:Pulstar Pulse Plug

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Pulstar pulse plugs by Enerpulse look and fit like traditional spark plugs, but are exponentially more powerful. Pulstars discharge with 10 times the energy of a spark plug! This high power pulse discharge ignites the compressed air/fuel mixture in the cylinder more precisely and completely, producing on average 6% better fuel economy and torque.


With the assistance of Sandia National Laboratories in Albuquerque, Enerpulse developed Pulstar™ to increase the peak power of the spark by 10 times and ignite gasoline in the engine's cylinder more completely, with less cycle-to-cycle variation. The result is more engine torque, more horsepower and better fuel economy.

Official Websites

Purchase - Mention the promotion code "PES" and get 10% off. - Another product line, including test results.


Image:FreeEnergyNowRadioIcon95x95 byKevn.gif

Download - On Feb. 18, 2008, Congress:Founder:Sterling D. Allan conducted a live, 1-hour interview with Pulse Plug inventor/designer, Lou Camilli, as part of the Free Energy Now radio series.

Pulse Plug

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The company says the high power of the Pulstar™ will not damage an engine because the high power event lasts only for 2 microseconds (billionths of a second). This very brief moment is enough to ignite the fuel in the cylinder, but too brief to overheat the combustion chamber or metal engine components. So it will neither harm your engine nor void your manufacturer's warranty.

: "Pulstar™ looks like a spark plug because it was designed to fit into the same hole in your engine. But, internally, Pulstar™ is very different, incorporating a pulse circuit no other plug has. This is why we call Pulstar™ a "pulse plug" and not a spark plug."

How it Works

Pulse plugs incorporate a pulse circuit, which stores incoming electrical energy from the ignition system and releases the stored energy in a powerful pulse of power. Instead of 50 watts of peak power typical of all spark plugs, pulse plugs deliver up to 1 million watts of peak power.

Spark plugs waste energy by heating ignition components before the spark occurs. Pulse plugs capture wasted energy with a pulse circuit and then release the captured energy into and eyond the spark gap. When the ignition power overcomes the resistance in the spark gap, the pulse circuit discharges all of its accumulated power - 1 million watts - in 2 billionths of a second!

What makes a Pulse Plug?
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This is the primary connection point to the rest of the ignition system. It is shaped so the wire usually just snaps onto the top of the plug.


Made from an aluminum oxide ceramic that is able to withstand very high temperatures and protect against the high-voltages that the ignition system requires from ‘leaking out’.


This is what keeps EMI and RFI from getting into the advanced computer systems of today’s automobiles.

Pulse Circuit:

This is what separates a pulse plug from a normal plug. Here, the energy is stored to be released into the gap once breakdown voltage is achieved by the ignition system. A typical plug will have only the resistor then a conductor that continues to the center electrode.

Plated Shell:

This provides the hex to torque down the plug, the threads to hold the plug in the engine, the sealing surface to keep combustion gasses in the engine, the mounting point for the ground strap and the connection to ground for the plug.

Gas Seal:

This part of the plug keeps the combustion gasses from just pressing out the center electrode on the plug and causing a leak.


Center Electrode:'''

The center electrodes on plugs are made from many different materials from copper to inconel to iridium. This is the first half of the plug that actually creates the gap for the spark.

Ground Strap:

The ground strap is the second part of the gap and comes in a multitude of shapes and materials. One example is the Bosch platinum series that come with your choice of one, two or 4 ground straps.

How you get a spark

When the ignition event in an engine is needed what happens in the ignition system depends on the type of ignition system.

In an inductive ignition system the primary side of the coil is always energized at 12v until it’s disconnected when the primary is disconnected the magnetic field on the primary collapses and induces a 30,000v charge on the secondary coil which has the spark plug as its load.

In a CDI(Capacitive Discharge Ignition) system the signal is sent to the CDI circuit which sends a short, high-voltage pulse to the CDI ignition coil. The CDI ignition coil is basically just a transformer that takes the 250v input voltage and steps it up to around 40,000v very rapidly. In either case, what you get is a high voltage charge that is used to create the spark that ignites whatever fuel the engine happens to be burning, from ethanol to gasoline.

The breakdown voltage required to cross the gap in the engine depends on a multitude of factors such as air temperature, air pressure and fuel saturation. Assuming normal atmosphere the breakdown voltage required for a typical .044" plug gap and compression pressure of 160psi is around 25kv. That is a typical engine usually at full throttle, additionally, when the engine is at part throttle that voltage demand decreases significantly.

When the plug gap reaches its breakdown voltage requirements a plasma stream is formed from the center electrode to the ground strap on the plug. This plasma stream has zero resistance and drains the available power from the pulse circuit in about 2 microseconds. After this the normal resident stage of the spark continues until the coils have discharged and the process starts again.

The breakdown of the gap in a plug will cause electromagnetic and radio frequency interference. Proof of this is in old spark-gap Morse code transmitters that relied on this interference for transmission. This interference would cause havoc with new electronic ignition and fuel injection computers, not to mention the radio frequency interference causing problems in radio reception. These resistors are in the plugs and also resistance is put into the plug wires leading to the plug. In a pulse plug the insulation from interference is still there but it’s before the pulse circuit and therefore the stored energy has an open pathway to freely discharge across the gap.

What does this mean in the engine

Pulse plugs take advantage of the charge / discharge cycle by storing energy on the voltage rise into its capacitor and releasing it very quickly when the breakdown of the gap happens. Instead of a typical spark that has 25kv and .05amps, the pulse plug can, for around 2 microseconds, put 50 amps across the gap. Since the gaps are usually the same as or less than your normal spark plug, and timing is unaffected since the spark voltage and length do not change.


A Spark of Genius


(10.25 Minutes) Panacea-BOCAF Water Spark Plug (1 of 3)

This is Panacea-BOCAF's plasma water spark plug video production done to support open source engineers and to create public awareness of this circuit and other plasma research. (YouTube November 06, 2008)

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Independent Tests - Independent Test Results Blog

I bought and tested these plugs against other newplugs in my 1994 Ford Aspire. Under controlled test runs these plugs gave just shy of 4mpg better fuel economy. They were tested against E3s and Bosh platinums.


Company: Enerpulse Incorporated

Enerpulse is headquartered in Albuquerque, New Mexico. They are a 10-year old company that specializes in developing environmentally friendly ignition products through the application of pulse power technology.


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In the News

Google News > pulstar pulse plugs

Ad - "The spark plugs in your car are just as feeble as the ones in your lawnmower. Each provide a measly 50-watt spark. For over 100 years, conventional wisdom assumed that 50 watts was sufficient to efficiently ignite fuel. But, the Pulstar™ Pulse Plug is proving conventional wisdom wrong." (Popular Science Magazine July 2007)

Pulse plugs boost horsepower, torque and fuel economy - Pulstar is a new ignition technology that looks and fits into vehicles like spark plugs, but is 20,000 times more powerful, improving both fuel economy and performance in almost any type of vehicle. (Gizmag July 10, 2007)

Spark plug maker lands $5.5 million investment - Enerpulse Inc. has secured $5.5 million in its second round of financing for the consumer launch of Pulstar Pulse Plugs, spark plugs the company says ... (, NC - Jul 6, 2007)

SAIL Venture Partners and Altira Group Add Financial Fuel to ... - Pulstar Pulse Plugs are currently available for purchase online and in August will be available at select automotive parts stores in the Los Angeles market. ... (American Venture Magazine (press release), CA - Jul 6, 2007)

Spark Plug Defies Climate Change - Enerpulse says its Pulstar pulse plugs, launched in June, increase combustion efficiency by burning fuel more completely and at a faster rate. ... (Red Herring, CA - Jul 6, 2007)

“Pulse Plug?? Demonstrates 2.7% Improvement in Fuel Efficiency - ENERPULSE, an ignition products company, announced today that its prototype pulse plug (Pulstar), has demonstrated a 2.7% improvement in spark-ignition engine vehicle fuel efficiency over spark plugs in Environmental Protection Agency (EPA) tests. Pulstar is the first capacitor-enhanced spark plug. The drop-in replacement for spark plugs uses the capacitor to store and then discharge the ignition’s electrical power in a powerful pulse. Enerpulse had marketed an earlier version of the technology in a 2-piece sparkplug it called DirectHits. (Green Car Congress Jan. 23, 2006)


See - Test Results Blog

On Feb. 9, 2009, CEO Thomas Braun said that they see about a 5% return rate on this product. A third of those are from customers who damage the plugs during installation a third are from people who didn't calculate the cost of installation and a third are from customers who didn't see any improvement in their performance.

Xpeditions TV - Between August 2007 and Febuary 2008, Jerry and Kathy Wills drove a 1999 seven thousand pound, K1500 Chevy Suburban 28,000 miles criss-crossing America. Using Pulstar plugs, they got an extra 5 miles per gallon... a 50% increase! Video.

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Directory:Pulstar Plug:Jerry Wills Testimonial - Driving 24,000 miles in a 1999 Chevy K1500 Suburban since August 29th, 2007, Jerry Wills saw his mileage increased by around 40%, going from 10-11 MPG without the plugs to an average of 15+ mpg with the plugs, saving him more than $2,500. (PESWiki Feb. 18, 2008)

I have been using Pulsar plugs in my '92 Honda Accord with 200,000 miles on it and get about 8% better mileage. Just installed them into an 03 Subaru Forester but don't have data yet. Pulsar claims about 2% to 10% increase depending on vehicle. -- New Energy Congress member, Congress:Member:Charles Bensinger, July 15, 2008.

Reality check: I have been using these plugs in my '97 Subaru Outback Sport for since September 2008 and as of March 2009 have seen NO DIFFERENCE in my gas mileage. My understanding was that it would take 2 tank-fulls for the plugs to perform optimally, but there's NO DIFFERENCE. My drill is the same: I go about 250 miles, go to the same gas staion, add gas in the evening until the pump shuts off automatically, and take a reading. I'm very disappointed. You had better think twice about spending $100 for a set of these plugs.--batteryswap 15:40, 20 November 2008 (PST)

"I have been using the puseplug for about 1 year. They did not work as advertised, 'my fuel mileage did not increase'. They may work in some cars but not in mine. I would not recommend to anyone the puseplug. I put them in a 1997 chevy pickup, the mileage had no change at all." (Gary Rousseau February 07, 2009)

Other Coverage

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Enerpulse, Incorporated

2451 Alamo SE


New Mexico 87106 USA

TEL: 888.800.6700 (1-505-842-5201 for International calls)

Mention the promotion code "PES" and get 10% off.

FAX: 505.842.6592

email: []

Canadian Distributor

in Alberta

403-346-7960 - Canadian customers can also get 10% off by mentioning the promotion code "PES".

email: []

See also

Directory:Firestorm Spark Plug


Directory:Pulstar Plug:Jerry Wills Testimonial

Directory:Spark Plugs

Directory:Fuel Efficiency


Directory:Fuel Efficiency - main index

News:Fuel Efficiency

Directory:Fuel Efficiency Vehicles


Directory:Energy from Roadways

Directory:Solar Pavement

Directory:Power-Generating Shock Absorber


Directory:Fuel Efficiency Additives

Directory:Alternative Fuels

Directory:Fuel Pre-Heating for Mileage Improvement

Directory:Fuel Efficiency Hydrogen Injection

Directory:Hydroxy or HHO Injection Systems

PowerPedia:Hydroxy Generators for Fuel Efficiency

Directory:Running Vehicles on Water

Directory:Clean Fuel Conversions

Directory:Spark Plugs

Directory:Hypermiling -- Driving Tips for Better Mileage

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Directory:Fuel Efficiency Retrofits


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Directory:X Prize:Automotive

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