HKS Fuel Uprade Kit 650cc for 2000-14 Subaru WRX EJ20/EJ25 [GDB/GRB/GVB] 14007-AF002

This fuel upgrade kit is designed and manufactured specifically for the Subaru WRX STI. This product includes 4 top feed, high impedance injectors and fuel pump for 650cc.

FUEL UPGRADE KIT 800/650cc for SUBARU IMPREZA Fuel upgrade parts for SUBARU IMPREZA Large capacity injector and fuel pump set that are required to increase horsepower. * ECU resetting is required to change injector or fuel pressure.

Application

• Injector
  (Top feed, high impedance, compatible with short (55mm)type)
  EJ207 GRB (blue)/GDB (pink)
  EJ255 BM,BR (green)/BL, BP (blue)
  EJ257 GRF (blue)
• Fuel pump
  GRB, GRF, GDB (BM, BR/BL, BP not tested)

●Injector

■Features (Concept)

• Enough capacity for a big turbine.
• With insulators on both ends of injector, no modification is required for installation.
• Injection direction towards intake valve.
  ⇒ As a result, response of air / fuel ratio will improve because of less volume of fuel for cylinder from surface of port.

 

○Performance Comparison of injector volume and horsepower

	GRB stock	650cc (yellow)	800cc (Purple)
Code #	16611-AA720	14002-AF002	14002-AF001
Injector volume	525cc	650cc	800cc
(Full injection capacity)*	570cc	730cc	850cc
Max. horsepower	350	420	500
Number of injection hole	12 tapered	2 tapered	2 tapered
Turbocharger	Stock	GT2835	GT3037

* Tested at 300kPa. Since there is injector dead time, values at about 90% are used for the names.

●Fuel pump

• Compatible with stock pump. It enables large capacity in tank type pump.
• It works at high fuel pressure to prevent “fuel drop” at increased fuel pressure and high boost level.
• As it is installed in stock pump case, fuel baffle function of stock system can work.

 

○Performance comparison of supply capacity and horsepower

		GRB stock	HKS
Injector volume	@300kPa	190L/h	250L/h
	@500kPa	125L/h	190L/h
Max. horsepower *		350PS	500PS
Size		φ38 L=114	←

* When calculation fuel pressure is decreased, supply volume will increase and calculated horsepower will be increased.

 

●Remarks for installation

• Small modification inside stock pump case is required.
• Replacement of connectors for wires of pump is required.

If interested, please contact us at Bulletproof Automotive for more information regarding pricing, fitment, shipping costs, as well as installation recommendations.

Part #: 14007-AF002

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