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Exact Control is Top Performance!


Ignition Accessories –Baru Sparkplugs

Better Metal, Better Insulator, Better Design = Better Performance


Champion Interchanges-http://www.gpgsparkplugs.com/TempImg/images/GPGSparkplugs/ChampionInterchange2004.pdf

Altronic Interchanges-http://www.gpgsparkplugs.com/TempImg/images/GPGSparkplugs/altronicsinterchange2004.pdf

Stitt Interchanges- http://www.gpgsparkplugs.com/TempImg/images/GPGSparkplugs/STITTINTERCHANGE.pdf

Fired in Suppressor- One-piece construction with zero leakage and greater strength.
• Suppressor is less sensitive to the effects of high temperature; more stable resistance values
• Overall design is more durable
• Suppressor has the ability to be accurately tested in the field
• Reliable gas-tight seal
• RFI protection
• Field proven dependability in high voltage applications

Premium Electrode Materials- Laser welded electrodes made of unique high quality nickel alloys, specifically chosen for high welding capability with Platinum, Iridium and Palladium.
• Electrodes resist electrode deterioration to withstand the most severe operating environments.

Electrolytic Nickel Plating & “Hot Lock” Shell Sealing- Special plating to enhance the ability to resist corrosion and other harmful effects of combustion.
• Removal and servicing is significantly easier; less hassle and downtime associated with plugs
• Helps eliminate gas leakage between the steel shell and insulator
• Protects from damage due to moisture, vibration and pressure from the combustion process

     Ignition Accessories –Andover Coils
Better Metal, Better Insulator, Better Design = Better Performance

Andover“Makers of the Finest Ignition Coils in the World”

Distributed by: Exact

Inductive Coils

  • Falanged
  • Integral

Capacitive Coils

  • Falanged
Better ignition coils deliver:vEngine ReliabilityvFuel Efficiency

vLong Maintenance Service Intervals

vLow Air Emissions






AFRC – GILL Instruments ZeroDrift AFRC

The wide band oxygen sensor (UGEO) provides a consistent linear output, in relation to percentage of oxygen in an engine’s exhaust. This provides accurate measurement from very fuel rich air/fuel mixtures up to 21% oxygen concentration. This sensor can be used in both stoichiometric and lean burn configurations and allows the use of proportional control systems. The inexpensive O2 sensor is fast acting and has no need for a permissive thermocouple to begin controlling.

Sensing the Exact Exhaust Oxygen Composition:

Linear mA output from EUGO Sensor for 0-21% O2

Maintaining Exact O2 set-point to stay compliant:

The UEGO sensor provides such an accurate measurement of the oxygen concentration that when an engine experiences a change in liniarload, the AF120 system is able to measure the change in O2 and make adjustments to the valve position accordingly. This leads to a faster and more accurate response to load steps. Engines using the Gill AF120 system have shown that the system is capable of keeping an engine’s emissions below strict requirements, such as those in California, for over six months, without the operator making changes to the engine – a major improvement over older narrow band systems.
Narrow Band O2 SensorThe zirconium dioxide, or zirconia, lambda sensor is based on a solid-state electrochemical fuel cell called the Nernst cell. Its two electrodes provide an output voltage corresponding to the quantity of oxygen in the exhaust relative to that in the atmosphere. An output voltage of 0.2 V (200 mV) DC represents a “lean mixture” of fuel and oxygen, where the amount of oxygen entering the cylinder is sufficient to fully oxidize the carbon monoxide (CO), produced in burning the air and fuel, into carbon dioxide (CO2). An output voltage of 0.8 V (800 mV) DC represents a “rich mixture”, one which is high in unburned fuel and low in remaining oxygen. The ideal setpoint is approximately 0.45 V (450 mV) DC. This is where the quantities of air and fuel are in the optimum ratio, which is ~0.5% lean of the stoichiometric point, such that the exhaust output contains minimal carbon monoxide.The voltage produced by the sensor is nonlinear with respect to oxygen concentration. The sensor is most sensitive near the stoichiometric point and less sensitive when either very lean or very rich. The zirconia sensor is of the “narrow band” type, referring to the narrow range of fuel/air ratios to which it responds.The engine control unit (ECU) is a control system that uses feedback from the sensor to adjust the fuel/air mixture. As in all control systems, the time constant of the sensor is important; the ability of the ECU to control the fuel-air-ratio depends upon the response time of the sensor. An aging or fouled sensor tends to have a slower response time, which can degrade system performance.
Replacement Cost~$75 each 1 year
Replacement Cost~$150 each 2 Replacement Cost~$75 each 1 year
Wideband Sensor
A variation on the zirconia sensor, called the “wideband” sensor, was introduced by Robert Bosch in 1994, and has been used on a lot of cars[3] in order to meet the ever-increasing demands for better fuel economy, lower emissions and better engine performance at the same time. It is based on a planar zirconia element, but also incorporates an electrochemical gas pump. An electronic circuit containing a feedback loop controls the gas pump current to keep the output of the electrochemical cell constant, so that the pump current directly indicates the oxygen content of the exhaust gas. This sensor eliminates the lean-rich cycling inherent in narrow-band sensors, allowing the control unit to adjust the fuel delivery and ignition timing of the engine much more rapidly. In the automotive industry this sensor is also called a UEGO (for Universal Exhaust Gas Oxygen) sensor. UEGO sensors are also commonly used in aftermarket dyno tuning and high-performance driver air-fuel display equipment. The wideband zirconia sensor is used in stratified fuel injection systems, and can now also be used in diesel engines to satisfy the upcoming EURO and ULEV emission limits.Wideband sensors have three elements:

  • Ion oxygen pump
  • Narrowband zirconia sensor
  • Heating element