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HotWires® Performance:
The Influence of Nology's HotWires On Engine Thermodynamics and The Resulting Improvements in Performance and Efficiency :

The physics behind HotWires is somewhat controversial, but at closer scrutiny very logical. Nology claims that if you do the same work in a much shorter time you increase the power. After all, the age-old formula for power is: P=W/t. In the case of HotWires, the spark is discharged in one very short plasma pulse rather then in a much longer time like in conventional ignition systems. This shorter spark duration increases the usable power of the spark tremendously. To illustrate Nology's point further, picture a drum filled with 1,000 gallons of gasoline. The drum is the ignition coil and the 1,000 gallons of gasoline is 100% of the available spark energy stored in the ignition coil. Now punch a hole into the drum so the gasoline can drip out and set the whole thing on fire. Let us assume it will take 47 days for all the gasoline to burn, drip by drip. That's the spark duration. Now take the same drum (ignition coil) and the same 1,000 gallons of gasoline (100% of available spark energy) and throw a match into the drum so everything blows up in 1 second. That's the HotWires spark duration. The same energy is released in a much shorter time, increasing the power of the event substantially. The way HotWires achieve this effect is solely attributed to the built-in capacitors. Once a capacitor is fully charged, it will release the stored energy in an ultra short pulse, or burst. Just think about the flash of a camera. This flash is powered only by 1.5 volt batteries, yet it creates a burst of light many times brighter then even the 110 volt lights in your home. Furthermore, a much shorter spark duration increases ignition timing accuracy. The spark of conventional ignition systems are so weak, a long spark duration is necessary to assure combustion initiation. However, this situation doesn't guarantee that the set timing point is actually when combustion initiation starts. This can happen at some point during the spark's duration. Whereas with HotWires, the ultra powerful spark guaranties that combustion is initiated at exactly the set timing. It takes 135 degrees of crankshaft rotation to release all the energy of a spark with a duration of 4 milliseconds, at an engine speed of 7500 rpm. In comparison, the HotWires spark will have released 100% of the available energy in less then 1 degree of crankshaft rotation. Now that's timing accuracy.

This brings us back to Nology's claims that HotWires increase the engine performance while decreasing fuel consumption. It is industry-wide accepted that a more powerful spark does assure faster and more reliable ignition, furthermore, a larger and hotter flame kernel provides faster flame-front growth and more complete combustion, and since the whole combustion process is shorter the thermodynamic efficiency of the engine is increased. All this translates into better fuel efficiency, more horsepower and torque. To find out exactly how much more and to verify the claims regarding faster combustion and increased thermodynamic efficiency, we put a high performance 350 chevy through its paces. We used a very sophisticated engine dyno that was equipped with an engine cycle analyzer (ECA). This device measures the combustion temperature and pressure inside the engine in reference to the exact crankshaft position (crank-angle-degrees). The results speak for themselves. Full throttle horsepower was up an incredible 7.3 hp and torque a full 7.8 lbs-ft, whereas, brake specific fuel consumption (BSFC) was down 5.67% and exhaust gas temperature (EGT) an average of 37°F. This does indicate a more efficient engine, extracting more horsepower and torque while using less fuel. The drop in EGT is an indication that combustion is occurring at a faster rate, where more of the thermodynamic energy (heat) has been turned into kinetic energy (torque) by the time the exhaust valve opens. Further analyzing the data of the ECA showed peak pressure was up by 3.6% and was reached 1.2 degrees sooner. Peak combustion temperature was up by 1.7% and was reached 1.0 degree sooner. Furthermore, the ECA revealed a much lower cycle to cycle variation. This lower cycle to cycle variation manifests in a much smoother running engine and increased horsepower and torque. All this evidence supports Nology's claim that HotWires ignite the air-fuel mixture quicker and more complete. Furthermore, according to Nology, their system is being used by some of the top racing teams around the world in all kinds of motorsports and has been responsible for many track records, national records and even some word records.

Test Perimeter:
Engine high performance small block Chevrolet
Size 350 CID
RPM 4000
Throttle wide open

  Horsepower Torque BSFC EGT°F
Conventional 319.5 370.6 .53 1372
Nology 326.8 378.4 .50 1347

Overall Results:
RPM Horsepower Torque  BSFC  EGT
2000 + 0.8 (0.64%) +2.2 (0.67%) -2.78% -52 (4.76%)
2500 + 3.4 (2.05%) +7.2 (2.06%) -4.17% -47 (4.27%)
3000 +2.4 (1.17%) +4.2 (1.17%) -2.09% -43 (3.82%)
3500 +3.2 (1.31%) +4.8 (1.31%) error -39 (3.37%)
4000 +5.9 (2.08%) +7.8 (2.10%) -4.17% -35 (2.90%)
4500 +2.5 (0.80%) +2.9 (0.79%) -2.09% -33 (2.60%)
5000 +4.5 (1.53%) +5.1 (1.52%) -1.97% -23 (1.74%)
5500 +7.3 (2.28%) +7.0 (2.28%) -5.67% -25 (1.83%)
Average +3.8 (1.48%) +5.1 (1.48%) -3.0% -37 (3.17%)

HotWires show an average horsepower and torque improvement of close to 1.5%. Peak improvements are almost 2.3%. Due to improved combustion efficiency, average full consumption is down almost 3% and EGT is reduced by 37°F.

Data of Engine Cycle Analyzer
Evidence of improved Thermodynamic Efficiency
  Pmax Crank Angle @ Pmax
Conventional 863 PSI 10.6 Degrees ATDC
Nology 894 PSI (+3,6%) 9.4 Degrees ATDC (-1.2)
 
  Tmax Crank Angle @ Tmax
Conventional 2743°F 21.0 Degrees ATDC
Nology 2792°F (+1,7%) 20.0 Degrees ATDC (-1.0)

With HotWires installed combustion was not only enhanced, indicated by an increase in maximum cylinder pressure, it also occurred faster, indicated by the pressure peak occurring over one full degree sooner.

Easy Ignition Upgrade

Many racers are skeptical when you tell them they can get horsepower increases from something as mundane as plug wires and a coil. But the Nology HotWires and ProFire do exactly that. To substantiate Nology's claims we decided to test Dan Longacre's 1963 MGB on the dyno. Dan races his MGB in VARA and is the current E-Production Champion. The chassis dyno we used belongs to Dave Evans of Evanspeed. Dave has been tuning high performance engines for more than 15 years and is no stranger to vintage cars. First we established the baseline horsepower trough a number of dyno runs with the stock set-up and a perfectly dialed-in motor. Next we installed the HotWires and the ProFire coil and retested the Ron Hlavka built motor. As claimed by Nology, we saw a substantial performance increase across the board. Since most vintage racers are purists and don't want to install those high performance red ignition boxes, Nology's HotWires are the perfect ignition upgrade. Furthermore, plug wire upgrades are not regulated and are legal in all vintage classes. How can plug wires do this? HotWires are engineered with a special built-in capacitor, exclusive only to HotWires. This revolutionary and patent pending design allows spark energy to accumulate in the capacitor until the voltage reaches the ionization point. At that split-second the entire power of the stored spark is discharged at once. The resulting spark is up to 300 times more powerful. Combustion is faster and more complete, resulting in increased horsepower and a cleaner burn. Replacing conventional ignition wires with HotWires is the easiest way to increase the performance of any engine. The numbers speak for themselves.

  Baseline Nology  
RPM BHP BHP HP Gain
7000 105 106 1
6500 103 105 2
6000 100 102 2
5500 91 94 3


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