EFI Technology

EFI Technology Inc. is an independent high-performance automotive electronics engineering company founded in October 1988 by Graham Western and based in Phoenix, Arizona. The company grew from Western’s experience in Formula 1, Indy car, and engine-management development. After completing a master’s degree in engineering at Cranfield University in England, Western worked at Cosworth Engineering and later joined Michael Andretti’s Indy car operation in California before establishing EFI Technology. The company’s original focus was programmable electronic control for racing engines. Its first fully user-programmable engine control unit, introduced in 1988, was adopted by Pontiac Motorsports for an IMSA racing program. Early racing work established EFI Technology as a specialist supplier able to combine engine-control hardware, ignition management, software, and calibration support for demanding competition environments. The business subsequently broadened its systems for automotive, off-road, marine, and motorcycle applications. A major early relationship was formed with Toyota Racing Development in 1990, when EFI Technology developed an ECU for Toyota’s 503E engine program. The engine powered All American Racers’ Eagle MkIII in IMSA GTP competition, where it achieved a highly successful record that included 21 wins from 27 entries and 14 consecutive IMSA victories. EFI Technology later supplied additional systems for Toyota Atlantic, SCORE off-road, and stadium-truck programs. The company also entered Indy car racing during the early 1990s, supporting Buick-powered programs. In 1992, Al Unser Sr. drove a Team Menard Buick-powered Lola to third place at the Indianapolis 500, then the best result achieved by the Buick Indy engine. EFI Technology expanded beyond competition vehicles during the 1990s. In 1995 it began designing systems for military applications, initially creating an ECU for a high-output endurance V8 used by the Naval Special Warfare Development Group. This work led to further defense and aerospace programs, including engine controllers and software for high-altitude unmanned aerial vehicles. The company later became a supplier to Elbit Systems, supporting UAV-related work associated with the Watchkeeper WK450 program for the British Army. The company continued to develop international motorsport relationships. From 1996 it worked with Neil Brown Engineering on Mugen-Honda touring-car and Formula 3 engine programs. The Formula 3 program reportedly won ten consecutive championships from 1996 through 2005, while the touring-car program recorded 13 podium finishes in 1997. EFI Technology also supplied electronics for Nissan’s Infiniti V8 program in the Indy Racing League, using a system with self-learning lambda control intended to simplify tuning and improve engine performance. Later work with Mugen included controllers and ignition systems for NSX and MF408S V8 engines, with the latter appearing in American Le Mans Series competition in 2002. Data acquisition became another important business area. EFI Technology introduced its data-acquisition product line in 2001, initially working with Team Fernandez in CART and subsequently adding Chip Ganassi Racing. The range expanded to data loggers and dash displays used in sports-car and open-wheel racing. Mugen also adopted and distributed some of these products for its JGTC program. Since 2007, EFI Technology has manufactured ECU and ignition products for Edelbrock, marketed under the Pro-Flo and Pro-Flo XT brands. The relationship later extended into data acquisition, including Edelbrock’s QD2 advanced data logger introduced in 2009. EFI Technology’s product history also includes systems for drag racing, motorcycles, midget and sprint cars, throttle-body injection, sportsman racing, and aerospace applications. EFI Technology’s positioning is that of a specialized engineering and systems supplier rather than a mass-market vehicle-electronics brand. Its portfolio…

EFI Technology was established in October 1988 in the United States by Graham Western, an engineer whose earlier career included Formula 1 and Indy car engine-management work at Cosworth Engineering and with Michael Andretti’s racing organization. The company’s first major product was a fully user-programmable ECU introduced for motorsport and adopted by Pontiac Motorsports in IMSA competition. This early success gave EFI Technology a foundation for supplying engine manufacturers and racing teams with configurable electronic control systems. During the early 1990s, EFI Technology expanded its racing portfolio. In 1990 it developed an ECU for Toyota Racing Development’s 503E engine program. The engine achieved notable success in IMSA GTP competition in the Eagle MkIII, including 21 wins from 27 races and a reported 14-race winning streak. EFI Technology subsequently developed products for Toyota Atlantic, SCORE off-road, and stadium-truck programs. The company entered Indy car racing in 1991 through programs using the Buick Indy engine. Team Menard’s Buick-powered Lola, driven by Al Unser Sr., finished third at the 1992 Indianapolis 500, which was described as the best Indianapolis 500 result for the Buick engine. In 1995, EFI Technology diversified into military electronics. Its initial defense product was an ECU for a high-output endurance V8 used by the Naval Special Warfare Development Group. The company then pursued additional defense and aerospace applications, eventually specializing in engine-management systems for high-altitude unmanned aerial vehicles. This expansion broadened the company’s role from racing supplier to provider of specialized control electronics for mission-critical platforms. The company developed a substantial European and Japanese motorsport presence during the second half of the 1990s. In 1996 it began working with Neil Brown Engineering, which represented Mugen-Honda engine programs in British touring cars and Formula 3. EFI Technology supplied electronics for a Formula 3 program that achieved ten consecutive championships from 1996 to 2005, as well as a touring-car program that recorded 13 podium finishes in 1997. In 1997, Nissan used EFI Technology’s latest 2.5-series ECU and CD ignition system for its Infiniti 4.0-liter V8 Indy Racing League program. The system incorporated a self-learning lambda strategy and was later adopted by teams using the Aurora engine. EFI Technology continued its Mugen relationship in 1999, developing an engine controller and ignition system for Mugen’s NSX program. Mugen later used related systems for its MF408S V8, which debuted at the 2002 Sebring 12-hour American Le Mans Series event. In 2001, EFI Technology introduced a dedicated data-acquisition product line. The company initially supplied Team Fernandez in CART and later added Chip Ganassi Racing. Its data loggers and dash displays also found use in Mugen’s Japanese sports-car activities. From 2007 onward, EFI Technology manufactured ECU and ignition products for Edelbrock under the Pro-Flo and Pro-Flo XT names. The commercial success of this arrangement encouraged EFI Technology to extend its work into data acquisition, and Edelbrock introduced the QD2 advanced data logger in 2009. EFI Technology’s product chronology shows continuing development of specialized ECUs and ignition products for drag racing, motorcycles, midget and sprint cars, throttle-body injection, sportsman racing, and aerospace. The company’s later defense activity included supplying Elbit Systems with engine controllers and custom software for unmanned aerial vehicles. Elbit’s United Kingdom operation was associated with development of the Watchkeeper WK450 for the British Army, using an engine controller designed by EFI Technology. Public reference material does not establish detailed information about later ownership, revenue, current leadership beyond the founder’s historical role, or the full status of each legacy product. The company is nevertheless described in available material as continuing to operate across racing, automotive, aerospace, and defense electronics.

1. 2021R1i Outlaw midget ignition

   The listed product chronology includes the R1i Outlaw ignition product for midget racing.

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2. 2018R2 aerospace ECU

   The product chronology identifies the R2 ECU as an aerospace product for four-injector applications.

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3. 2009Edelbrock QD2 data logger

   Edelbrock introduced the QD2 advanced data logger following EFI Technology’s expansion into data-acquisition products.

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4. 2007Edelbrock Pro-Flo relationship

   EFI Technology began manufacturing ECU and ignition products for Edelbrock’s Pro-Flo and Pro-Flo XT product lines.

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5. 2001Data-acquisition product line launched

   The company introduced data loggers and related data-acquisition products for professional racing customers.

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6. 1996Mugen-Honda and Neil Brown Engineering programs

   EFI Technology began supporting Neil Brown Engineering’s Mugen-Honda Formula 3 and British touring-car engine programs.

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7. 1995Expansion into military electronics

   EFI Technology developed an ECU for a high-output endurance V8 used by the Naval Special Warfare Development Group and began expanding into defense applications.

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8. 1992Indianapolis 500 podium

   Al Unser Sr. finished third in a Team Menard Buick-powered Lola at the Indianapolis 500, the Buick Indy engine’s best result at the event according to the reference material.

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9. 1991Entry into Indy car racing

   The company began working with Indy car teams using the Buick Indy engine.

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10. 1990Toyota 503E engine program

    EFI Technology developed an ECU for Toyota Racing Development’s 503E engine program, later associated with major IMSA GTP success.

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11. 1988EFI Technology founded

    Graham Western founded EFI Technology in October 1988 in the United States after earlier engine-management work in Formula 1 and Indy car racing.

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12. 1988First programmable ECU introduced

    The company introduced its first fully user-programmable ECU, which was adopted by Pontiac Motorsports for an IMSA racing program.

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A specialist, engineering-led supplier of programmable engine electronics and data systems for high-performance motorsport and mission-specific automotive, marine, aerospace, and defense applications.

• Race and R-series ECUsMotorsport engine control1988

  EFI Technology’s racing ECU families provide programmable control of fuel injection, engine timing, and related engine functions. The chronology includes Race-series systems for IMSA, Indy car, Formula 3, touring cars, motorcycles, and other racing categories, followed by R-series units for throttle-body injection, sportsman racing, drag racing, midget applications, and broader racing use. Specific configurations vary by engine and competition class.

• X-series ECUsSpecialized engine control2006

  The X-series represents a later generation of EFI Technology control units for specialized racing and aerospace uses. Listed examples include the X1 for midget and sprint cars, the X3 for UAV systems, the X1e for Edelbrock Pro-Flo applications, the XTR for drag racing, and the X5 for 12-cylinder engines. These systems reflect the company’s practice of adapting electronic control platforms to distinct engine and operating requirements.

• Ignition-control systemsIgnition electronics1991

  EFI Technology develops ignition systems alongside its engine controllers. Its reference product history includes CD ignition systems for Indy car and other racing programs, ignition equipment associated with Mugen engine projects, and specialized products such as the R1i USAC Midget Ignition and R1i Outlaw. The systems are intended for precise, programmable ignition management in high-performance or competition engines.

• Data-acquisition systemsMotorsport data systems2001

  Introduced in 2001, EFI Technology’s data-acquisition portfolio includes data loggers and dash displays for racing teams and engine programs. The systems were used by customers including Team Fernandez, Chip Ganassi Racing, and Mugen-related sports-car operations. The company’s data work was also extended through the Edelbrock relationship, including the QD2 advanced data logger introduced in 2009.

• Aerospace and defense engine-control systemsAerospace and defense electronics1995

  EFI Technology supplies specialized engine controllers and custom software for defense and aerospace platforms. Its defense history began with an endurance V8 ECU for a Naval Special Warfare Development Group application and later expanded to systems for high-altitude unmanned aerial vehicles. The company has also been identified as a supplier to Elbit Systems for UAV-related work, including a proprietary engine controller associated with the Watchkeeper WK450 development program.

• Edelbrock Pro-Flo and Pro-Flo XT electronicsAutomotive aftermarket electronics2007

  EFI Technology manufactures ECU and ignition products marketed by Edelbrock under the Pro-Flo and Pro-Flo XT brands. These systems brought EFI Technology’s programmable engine-management expertise into the performance aftermarket. The relationship began in 2007 and was later complemented by Edelbrock data-acquisition products, including the QD2 advanced data logger.

• 2007Expansion through the Edelbrock Pro-Flo relationshipStrategy

  EFI Technology sought to apply its specialist engine-electronics capabilities beyond professional racing into the performance automotive aftermarket.

  What changed. The company began manufacturing ECU and ignition products for Edelbrock’s Pro-Flo and Pro-Flo XT brands.

  Aftermath. The product line’s reported success encouraged further work in aftermarket data acquisition, culminating in the QD2 data logger introduced by Edelbrock in 2009.

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• 2001Launch of data-acquisition productsProduct launch

  Racing customers required not only engine control but also measurement, logging, and driver-display capabilities.

  What changed. EFI Technology introduced a data-acquisition product line, initially supplying Team Fernandez and later Chip Ganassi Racing, while also supporting Mugen-related programs.

  Aftermath. Data loggers and dash displays became an additional product category and supported later expansion through the Edelbrock relationship.

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• 1995Diversification into defense and aerospaceStrategy

  After establishing itself in racing electronics, EFI Technology pursued military applications to extend its engine-control engineering into mission-specific platforms.

  What changed. The company developed an endurance V8 ECU for a Naval Special Warfare Development Group application and subsequently expanded into defense and aerospace engine systems.

  Aftermath. The move created a continuing defense and aerospace business, including UAV engine controllers and custom software.

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1. EFI Technology
2. EFI Technology official website