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As most of you know, the VAFC wont work with the later model I-VTEC motors, but the new VACFII will. We will be installing the VAFCII into a brand new 2001 Acura RSX.

The install of the VAFC II is straightforward procedure, and can be installed by any average mechanic.

Tools you will need

• Electrical Tape
• Pliers
• Wire strippers
• Wire clips or Solder iron

First, look over your VAFC booklet and wiring diagram. The RSX pinouts are shown here :


Click to enlarge

The appropriate VAFC wires and ECU pinouts are as follows

VAFC IIRSXRed PowerYellow / BlackBrown ( Secondary Ground )Black (ground)Black ( Primary Ground )Black (ground)Gray ( Throttle Signal )Red / blackOrange ( TDC Signal )Blue / WhiteLight Blue ( VTC Cam Signal )GreenYellow ( ECU Side of pressure signal output )Green / RedWhite ( Harness Side of pressure signal output )Greed / RedPurple ( ECU Side of VTEC Solenoid signal output )Green / YellowPink ( Harness side of VTEC Solenoid Signal output )Green / YellowGreen ( RPM )BlueBlue ( Unused in this install )N/A
Next we begin by pulling the passenger side seat back as far as it will go to allow you access to the ecu and floorpan. Then we will pull back the carpet to expose the ECU cover



You will see 2 pin buttons, pull those push pins out and pull off the cover to expose the ecu.



Unplug your ECU harness



First, cut the Green / Red wire on your ECU that is the pressure signal output for your RSX. Connect the Yellow wire to the ECU side of the pressure signal output, and the white wire to the harness side of the pressure signal output.



Now connect the 2 VAFCII power wires ( red ) to the Yellow / Black ECU wire. Then tap / solder your ground wires securely to your ECU harness, seperating the black and brown wires approximately 1 inch apart from each other. ** BE SURE TO INSTALL THE BROWN WIRE TO THE ECU SIDE FROM THE BLACK WIRE**



Connect the Gray VAFC Throttle wire to the Red/Black ECU wire.







Connect the Light Blue ( VTEC cam Signal ) wire to the Green ECU wire



Connect the Orange ( TDC Wire ) to the Blue / White ECU Wire.



Zip everything back up and you have now installed you VAFCII!!