Fuel injectors

Flow

Manufacturer	Injector	2 bar	3 bar	3.5 bar	4 bar	5 bar	Spray pattern	Connector
Siemens	S4				349cc/33#	390cc/37#		EV1
Bosch	Bluetop 36#		380cc/36#		422cc/40#	490cc/47#
	RS4				480cc/46#	538cc/51#	Dual cone 15 degree
	Greentop 42#		475cc/45#		550cc/52#	615cc/59#	Dribbly pencil
	Volvo "Green Giant" 42#		450cc/43#		520cc/50#	580cc/55#	Dual cone 15 degree
Delphi	37#		391cc/37#		462cc/43#
	38#		399cc/38#		462cc/44#
	42#		441cc/42#		515cc/49#
	50#		525cc/50#		609cc/58#
Siemens	Deka 41#? ('03 SRT4)		452cc/41#?		524cc/47#?		Dual cone?	EV6
	Deka 45# ('04 SRT4)		475cc/45#		546cc/52#		Dual cone?
	Deka 55# (3172)		599cc/57#				Narrow cone	EV1
	Deka 60#	514cc/49#	630cc/60#		727cc/70#		Wide cone
Genesis	415cc		415cc/39#		483cc/46#		Dual cone
	430cc		430cc/41#		494cc/47#		Dual cone	EV6
	550cc		550cc/52#	580cc/55#	635cc/60#		Dual cone

Adaptors

	Shape	Bosch	Comment
EV1	Oval	Design II	pintle-type
EV6	Rectangle	Design III	USCARR

Injectors are male, harness is female.

File:USCARR-Bosch-inj-adaptor.jpg

USCARR to Bosch fuel injector adaptors

http://www.fiveomotorsport.com/Injector_CONNECT.asp

Conversions

• 1 lb/hr gasoline = 10.5 cc/min (@720 kg/m³) (1 (pound / hr)) / (720 (kg / (m^3)))
• $Flow_{new}={\sqrt {\frac {P_{new}}{P_{old}}}}Flow_{old}$
• Density of typical test fluid = 760 - 770 kg/m³

  1 lb/hr = 9.81 - 9.95 cc/min

• Density of n-heptane = 685 kg/m³

  1 lb/hr = 11.0 cc/min

• 3 bar = 43.5 psi
• 4 bar = 58.0 psi
• 5 bar = 72.5 psi
• RC Engineering's online calculator

References

• http://usrallyteam.com/injectors.html - Genesis
• http://racetronix.com/ - Delphi and Siemens
• http://www.fiveomotorsport.com/Injector_SetsMODS.asp - All others
• http://www.srtforums.com/forums/showthread.php?t=99710 - SRT4
• http://forums.audiworld.com/s4/msgs/2091797.phtml - Flow comparison vs. stock.
• http://www.rceng.com/ - RC Engineering
• http://forums.audiworld.com/performance/msgs/30668.phtml - adjusting trip computer for different injector sizes