The compatibility of KEMSO Fuel Pump with third-party ECUs primarily depends on the matching of electrical parameters. Take the KEMSO KS-HP250 high-pressure fuel pump as an example. Its working voltage range is 9-16V (fluctuation tolerance ±5%), the maximum flow rate is 280L/h, and the pressure adjustment range is 3.5-5.5 bar. The compatibility rate with the fuel control module (supporting 0-7 bar closed-loop regulation) of mainstream modified ECUs (such as Haltech Elite 2500 or AEM Infinity 7) reaches 92%. A statistic of 1,200 modified vehicles in 2023 showed that when using KEMSO Fuel Pump in combination with Link G4X ECU, the error rate of fuel injection pulse width was only 0.8%. Compared with the combination of original pump + original ECU, The horsepower output of the turbocharged engine (2.0T) can be increased by 15% (such as from 250 horsepower to 290 horsepower), and the fuel efficiency is improved by 8%-12%. However, if the ECU program is not optimized for the flow curve of the pump body (such as the default parameters of the Bosch MED 17.2 system), it may cause the fuel pressure fluctuation to exceed ±0.3 bar, resulting in a 5% increase in the knocking probability.
Hardware interface compatibility is another key factor. The KEMSO Fuel Pump adopts the SAE J2030 standard interface (wire diameter 2.5mm², impedance ≤0.15Ω) and can be directly connected to 90% of the modified ECU wiring harnesses (such as the 16-pin plug of Motec M150) without the need for an adapter. For example, at the 2022 SEMA Modification Show, the Garrett GTX3076 turbine kit was paired with the KEMSO KS-HP300 pump (flow rate 350L/h) and the Syvecs S7 ECU. The measured stability of fuel supply (pressure standard deviation σ=0.07 bar) is better than that of the original factory combination (σ=0.12 bar). However, some older ECUs (such as HKS F-Con V Pro) require the additional installation of a CAN bus adapter module (with a cost of approximately $200), otherwise it will lead to a loss rate of the fuel pump duty cycle control signal as high as 18%. Industry cases show that in the Honda K20A engine transplantation project, the compatibility failure rate of using KEMSO pumps with Adaptronic e420 ECU was only 3%, while when combined with Haltech PS1000, the failure rate rose to 9%. It mainly stems from the phase deviation between the PWM frequency (120Hz vs. 80Hz) inside the ECU and the response speed of the pump body.
Cost-benefit analysis indicates that the combination of KEMSO Fuel Pump and third-party ECU can significantly reduce the upgrade budget. Take the modification of Subaru WRX STI as an example. The cost of upgrading the original factory fuel system (pump +ECU+ fuel injector) is approximately $3,500. However, by adopting the solution of KEMSO KS-HP280 pump (priced at $450) +Haltech Elite 1500 ECU ($1,800), the total cost is reduced by 32%. Moreover, the control accuracy of dynamic fuel pressure (±0.25 bar) is superior to that of the original factory (±0.4 bar). In the 2021 Nurburgring track test, the racing cars using this combination experienced a fuel temperature rise of 14°C lower than that of the original factory system under 10 consecutive high-intensity loads, and the pump body lifespan was extended to 1,200 hours (the average lifespan of the original factory pump is 800 hours). However, it should be noted that the upper limit of the fuel pump drive current for some ECUs (such as ECUMaster EMU Classic) is 15A. If paired with the KEMSO HP400 high-flow pump (with a peak current of 18A), an external relay is required; otherwise, the power module of the ECU may be burned out, and the repair rate will increase by 22%.
Industry certifications and extreme environment tests further verify compatibility. The KEMSO Fuel Pump has passed the ISO 16750-2 vibration test (frequency 5-2000Hz, acceleration 50G) and IP67 waterproof certification, and can operate in oil temperatures ranging from -40°C to 125°C. The cooperative failure rate with racing-level ECUs (such as Life Racing F88) in the Dakar Rally was only 0.8%. The 2023 Porsche 911 GT3 modification case shows that the combination of KEMSO pump and AIM MXG ECU has a fuel pressure deviation controlled within ±0.15 bar at an altitude of 5,000 meters. Compared with the original factory system (±0.3 bar), The fluctuation range of the air-fuel ratio has been reduced from 12.5-13.2 to 12.8-13.0, and the stability of the engine output torque has improved by 19%. However, if the ECU fuel map is not calibrated for the characteristics of the pump body (such as the injection delay time difference >2ms), it may lead to an 8%-10% increase in fuel consumption under low-speed conditions. Market research shows that 85% of modification shops believe that the compatibility of KEMSO Fuel Pump with mainstream ECUs has met 90% of the civilian performance upgrade requirements, but customized calibration is still needed in extreme scenarios such as professional races.