Calculating fuel injector size involves several factors, including the engine’s horsepower, fuel pressure, and the number of injectors. The most common formula used for this calculation is based on brake-specific fuel consumption (BSFC), which is the amount of fuel required to produce one horsepower for one hour. Here’s a basic formula to calculate fuel injector size:
- Injector Size is the flow rate of the fuel injector in pounds per hour (lb/hr).
- Horsepower is the engine’s estimated or measured horsepower.
- BSFC is the brake specific fuel consumption, typically given in lb/hp/hr. You can find average BSFC values for different types of engines, with turbocharged engines generally having higher values than naturally aspirated engines.
- Number of Injectors is the total number of injectors you plan to use.
- Injector Duty Cycle is the percentage of time the injector is open during each engine cycle. A common value is around 80%.
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FIC INJECTOR (141)
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Siemens / Mototron DEKA (7)
Genuine Siemens / Mototron DEKA IV High Impedance Injectors -
EFI High Performance Fuel Injectors (28)
High-Performance Fuel Injectors - Bosch Get the right injectors for the power you are producing. OEM - High-Performance Fuel Injectors -
OEM EFI Fuel Injectors (22)
CPR Racing offers EFI Port Fuel Injectors for the Best performance for your Daily Driver, Race car, Boat, Motorcycle or Powersport. Bosch Fuel Injectors have a robust design and are capable of using Ethanol fuel (E100). All Bosch fuel injectors released to the aftermarket are OE fit, form and function, and are produced to OE specifications. The Bosch fuel injector… -
Gasoline Injector Replacement Components (9)
Gasoline Injector Replacement Components. Get the right components for your fuel injectors or system that meet or exceed OEM quality. -
Injector Adapter and Connectors (24)
Back in 1998, when no one had injector adaptors, Goran Bogdanovic found the speaker housing connector that fit the EV6 fuel injector to install into the F150 Ford truck with a VR4 supercharger. CPR RACING started to make the retro kit adapters EV1 to EV6, which were sold in their kits, for Paxton Automotive and the rest of the aftermarket… -
EFI Fuel Injector Testing and Cleaning Service (3)
CPR Racing offers Fuel Injector Testing and Cleaning Services to ensure the optimal performance and efficiency of your fuel injectors. Our professional technicians utilize state-of-the-art equipment and industry-leading techniques to thoroughly test and clean your fuel injectors. Why choose our Fuel Injector Testing and Cleaning Service? Improved Performance: Over time, fuel injectors can become clogged or develop deposits, leading to… -
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- EFI gasoline engine components, Injector Adaptor , fuel injector and fuel components
Holley EFI 522205 Universal Fuel Injector
- Original price was: $1,022.00.$915.00Current price is: $915.00.
- 205 LB/HR PERFORMANCE FUEL INJECTORS - SET OF 4
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- OEM EFI Fuel Injectors
DELPHI 42LB Fuel Injector – Set 8
- $600.00
- DELPHI FJ10474 Fuel Injector - Set 8 42 lbs
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- Garage Sale, Injector Adaptor , fuel injector and fuel components
DeatschWerks® 35U-00-0072-8 – Fuel Injectors 7 injectors “missing one”
- $599.99
- DeatschWerks® 35U-00-0072-8 - Fuel Injectors 7 injectors "missing one"
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- EFI gasoline engine components, OEM EFI Fuel Injectors, Siemens / Mototron DEKA
Siemens F114357 Fuel Injector 44 lb/hr EV6/USCAR – SET OF 8
- $439.97
- 44 lb./hr. Siemens Deka Fuel Injector EV6/USCAR SET OF 8
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- Garage Sale, Injector Adaptor , fuel injector and fuel components
Deatschwerks 38 Lbs/Hr Fuel Injector Set – 32D-00-0038-8 set of 7 “missing one”
- $429.00
- Deatschwerks 38 Lbs/Hr Fuel Injector Set - 32D-00-0038-8 set of 7 "missing one"
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- FIC INJECTOR
2600cc-250lb-fuel-injector-2600-m1-34-14-14
- $275.00
- 2600 CC/250LB FUEL INJECTOR 2600-M1.34.14.14
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- FIC INJECTOR
2600cc-250lb-fuel-injector-2600-m1-34-14-15
- $275.00
- 2600 CC/250LB FUEL INJECTOR 2600-M1.34.14.15
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- FIC INJECTOR
2600cc-250lb-fuel-injector-2600-m1-48-11-is
- $275.00
- 2600 CC/250LB FUEL INJECTOR 2600-M1.48.11.IS
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- FIC INJECTOR
2600cc-250lb-fuel-injector-2600-m1-48-11-wrx
- $275.00
- 2600 CC/250LB FUEL INJECTOR 2600-M1.48.11.WRX
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- FIC INJECTOR
2600cc-250lb-fuel-injector-2600-m1-48-14-14
- $275.00
- 2600 CC/250LB FUEL INJECTOR 2600-M1.48.14.14
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- FIC INJECTOR
2600cc-250lb-fuel-injector-2600-m1-48-14-15
- $275.00
- 2600 CC/250LB FUEL INJECTOR 2600-M1.48.14.15
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- FIC INJECTOR
2600cc-250lb-fuel-injector-2600-m1-48-14-gtr
- $275.00
- 2600 CC/250LB FUEL INJECTOR 2600-M1.48.14.GTR
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