iWire Subaru Flex Fuel Conversion Harness

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SKU PP-SUFF001

Looking to run Flex Fuel on your JDM AVCS equipped EJ205 or EJ207 engine utilizing the Carberry ROM for the 16 bit ECU, but don't have TGV inputs? Purchase our Flex Fuel Conversion Harness! This harness takes the output signal from the Flex Fuel kit and and transfers it to run through the rear O2 sensor connector instead of the TGV connector.

Simply buy the off the shelf Flex Fuel content sensor kit, plug in and tune with the Carberry ROM. The Carberry ROM does not support Fuel Pressure so the additional Fuel Pressure Kit is not needed.

Could also be utilized on models with the TGVs deleted.

Compatible Cars:

  • 2001- 2007 JDM STI
  • 2001- 2007 JDM WRX
  • 2002-2005 USDM WRX Models with Deleted TGV connectors

Do I need the 3 Pin TGV or 5 Pin TGV version? 

You will know which version you need based on the Flex Fuel kit you have purchased because the iWire harness will match the TGV plug type in the kit. 

iWire recommends the 3 pin version of the Flex Fuel Kit because the fuel lines will be set up to work with the older style fuel lines found on the 16 bit ECU applications.

Looking to run Flex Fuel on your JDM AVCS equipped EJ205 or EJ207 engine utilizing the Carberry ROM for the 16 bit ECU, but don't have TGV inputs? Purchase our Flex Fuel Conversion Harness! This harness takes the output signal from the Flex Fuel kit and and transfers it to run through the rear O2 sensor connector instead of the TGV connector.

Simply buy the off the shelf Flex Fuel content sensor kit, plug in and tune with the Carberry ROM. The Carberry ROM does not support Fuel Pressure so the additional Fuel Pressure Kit is not needed.

Could also be utilized on models with the TGVs deleted.

Compatible Cars:

  • 2001- 2007 JDM STI
  • 2001- 2007 JDM WRX
  • 2002-2005 USDM WRX Models with Deleted TGV connectors

Do I need the 3 Pin TGV or 5 Pin TGV version? 

You will know which version you need based on the Flex Fuel kit you have purchased because the iWire harness will match the TGV plug type in the kit. 

iWire recommends the 3 pin version of the Flex Fuel Kit because the fuel lines will be set up to work with the older style fuel lines found on the 16 bit ECU applications.


This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov