NHRA announced the 2016 Pro Stock Electronic Fuel Injection (EFI) requirements
- Aug 13, 2015
- 2 min read
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
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