SKU: 57416169343

FLX01 - Upgrade Kit (3 Pin and 5 Pin Harnesses)

Sale price$172.77 Regular price$191.97
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USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 16 - Jul 21

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Description

FLX01 - Upgrade Kit (3 Pin and 5 Pin Harnesses)This kit is designed to provide a way to data log and monitor the ethanol content of fuel on most new Subaru Vehicles. Our proprietary controller reduces complications by generating its own on board 12V supply to power the sensor. This reduces wiring, installation time and improves reliability. Our system also properly references the ECU 5V power to provide the most consistent and accurate data. We have supplied hose assemblies for both the 2008+ STi

This kit is designed to provide a way to data log and monitor the ethanol content of fuel on most new Subaru Vehicles. Our proprietary controller reduces complications by generating its own on board 12V supply to power the sensor. This reduces wiring, installation time and improves reliability. Our system also properly references the ECU 5V power to provide the most consistent and accurate data. We have supplied hose assemblies for both the 2008+ STi and WRX in a single kit to reduce complication and confusion when ordering. The kit also comes with a custom wiring harness that can be detached from the controller to make any troubleshooting and repairs simple and painless.

Since the cars only have two TGV plugs capable of receiving inputs you cannot run our Secondary Injection Controller, Flex Fuel Sensor and Fuel Pressure Sensor kits all at the same time. You can only run a maximum of two of these three items. The SIC can be wired as power only in order to utilize all three but a custom harness must be made.

Compatibility:

3 Pin Version

2002-2005 WRX
2004-2006 STi
2004-2008 Forester XT
2005-2006 Legacy GT
2005-2006 Outback XT

5 Pin Version

2007-2021 STi
2008-2014 WRX
2007-2012 Legacy GT
2007-2009 Outback XT
2009-20013 Forester XT



Works with all fuel management systems but the car must be tuned specifically to run flex fuel. This kit has the same voltage output of other popular kits. Retuning your car most likely will not be required if you are just replacing another brand of flex fuel controller.

Key Benefits:

  • Replaceable wiring harness that will be sold separately

  • Automotive grade wiring

  • No need for 12v supply from rear O2 sensor (common failure point)

  • Installation can be done from the top with no need to crawl under the car

  • Properly referenced analog output from ECU 5V for better accuracy

  • Potted housing with solid pin connector for the ultimate in durability

Included in the kit:
Flex Fuel Sensor Controller
Wiring Harness (3 Pin or 5 Pin)

This product will not ship to California. It is not CARB approved. We do not feel that this product alters or changes the emissions systems on the car but due to the California regulations we cannot currently ship to that state.

DO NOT MOUNT CONTROLLER DIRECTLY ON INTAKE MANIFOLD. READ INSTRUCTIONS IN LINK BELOW.

Installation Instructions

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 57416169343

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4.8 ★★★★★
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Henry W
Lake Worth, US
★★★★★ 5
Better then the fake down style pillows
These shredded memory foam pillows are really comfortable. They’re soft but still supportive, and I like that you can adjust the fill to get the firmness just right. They don’t go flat easily and hold their shape well through the night. Definitely a nice upgrade if you want something more customizable than a regular pillow.
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Reviewed in the United States on April 21, 2026
M
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Melissa Palm
New York, US
★★★★★ 5
Best pillow!
Size: Upgrade Queen (2 Pack)
They work!! My husband and I get really hot and it has kept us cool and I have been sleeping all night since I bought them. Will definitely be buying again! The size is accurate and perfect. It gives me great support for my neck. I don’t wake up with my neck hurting and no headaches.
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Reviewed in the United States on April 20, 2026
J
Verified Purchase
jamie
West Palm Beach, US
★★★★★ 4
Good not great pillow
Good pillow no more no less solid
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Reviewed in the United States on October 28, 2025
D
Verified Purchase
Darrianne Spires
Charlottesville, US
★★★★★ 3
Try a different pillow
Size: Upgrade Queen (2 Pack)
Even with all the memory foam in it, it's still flat. No firmness to it. I hoped it would expand and settle in the few weeks I've had the pillows, but nothing works (dryer, fluffing, etc)
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Reviewed in the United States on June 4, 2026
A
Verified Purchase
Allison Stitt
Natrona Heights, US
★★★★★ 5
This is a must have!
Size: Upgrade Queen (2 Pack)
One of my favorite purchases! I love that you can take stuffing out as needed. My husband kept majority of his in because he likes a full pillow. I prefer a flatter, soft pillow so I took out probably half of the stuffing. We both love them!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026

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