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Fuel Calculators

Set of Deatschwerks Fuel Injectors for Subaru applications

Fuel Injector Size Calculator

Use this calculator to determine the best size injector for your setup:

Target Horsepower
Number of Injectors
B.S.F.C. *
Max Duty Cycle in % **
Required Injector Static Flow Rate @ 43.5 psi lb/hr cc/min

* Brake Specific Fuel Consumption (BSFC) if unknown, can be estimated as .4 to .5 for naturally aspirated, and .5 to .6 forced induction. Consult your engine builder for more accurate estimates.

** Limit maximum injector duty cycle to less than 90% for safe operation.

Flow Rate Conversion

Use this calculator to convert to and from gravimetric (lb/hr) and volumetric (cc/min) systems of measurement. Fill in either field below and press Calculate:


cc/Min
Lbs/Hour

Fuel Flow Calculator

Use this calculator to estimate changes in flow rates when a change in fuel pressure is made:

Old Fuel Pressure
New Fuel Pressure *
Old Flow Rate
New Flow Rate

* Most injectors are rated at 43.5 psi. DeatschWerks recommends keeping your base fuel pressure below 60-65 psi in most situations.

Buy Deatschwerks Fuel Injectors online at PartBox. We stock a range of performance fuel injectors for many cars including Dodge, Ford, GM, Honda, Hyundai, Infiniti, Lotus, Mazda, Mitsubishi, Nissan, Scion, Subaru, Toyota and Volkswagen.

Set of Deatschwerks Fuel Injectors for Subaru applications

Please note: Due to fluctuating exchange rates prices may vary from those shown.
All prices will be confirmed before payment is taken.

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