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NHRA announced the 2016 Pro Stock Electronic Fuel Injection (EFI) requirements

Today NHRA announced the 2016 Pro Stock Electronic Fuel Injection (EFI) requirements.  A detailed technical document containing the mandated part numbers, prices, and part specifications can be found on www.NHRARacer.com or by clinking on the following link: http://promod.nhra.com/UserFiles/File/Tech/NHRA_EFI_Specifications_Rev1.pdf.

NHRA 2016 PRO STOCK EFI REQUIREMENTS

  •  Engine Control Unit:

o    Holley HP ECU part number 554-129 mandatory

o    EFI closed loop functionality permitted

o    Rev Limiter:

§  NHRA hard limiter set to 10,500 rpm

§  Teams have the ability to set soft limiter to desired rpm level

  • Throttle Body:

o    Holley part number 112-123 mandatory (25 sq. inches)

o    Must be mounted forward facing and remain in the engine compartment

  • Fuel Injectors:

o    Holley part number 522-568 mandatory

o    Maximum of 8 injectors permitted

o    Must be mounted externally on intake manifold runners

o    Injector tips may not be modified and diffuser plates may not be added

o    Use of standard Holley supplied extenders only permitted

o    Holley HP Smart Coil-Near-Plug Smart Coil (8 ea.) Holley part number 556-112 mandatory

·         Fuel Delivery System:

o    90 psi Max

o    Earl's Performance Dry Break Coupler part number JV270204RL mandatory

o    Coupler must be remotely mounted on the fuel line between the fuel pressure regulator and fuel rail

o    Coupler must be easily accessible by NHRA Technical Department

  • Hoods:
    • Must be original OEM design, any variations to the hood must be submitted by the OEM and accepted by NHRA Technical Department prior to running in competition
    • Maximum hood height from ground will be determined at a later date
  • Air Intake:
    • Must be located below top of front grill
    • Opening in body (location and dimensions) must be submitted by the OEM and accepted by NHRA Technical Department prior to running in competition
  • Sensors (mandatory):

o    Holley Hall Effect Crank Sensor Holley part number 554-118

o   Holley Hall Effect CAM Sensor Holley part number 554-127

 

For additional information or questions please contact Tim White at twhite@nhra.com or 317-387-7361

 








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