Overview
Patent PendingImportant Notes:
- WiFi module analyzes ethanol content wirelessly via smart device
- Optional 0.5v - 4.5v configurable output for use with tuning devices/data loggers <li>
FK8 Civic Type-R is compatible with Hondata only
Technical Notes:
The PRL Motorsports Plug-and-Play WiFi Flex Fuel / Ethanol Content Analyzer Kit allows users to wirelessly monitor ethanol content via any smart device or enable flex fuel via the optional 0.5-4.5V configurable output with a tuning device. Our innovative, patent-pending design utilizes factory fuel lines, eliminating potential deterioration from alternative fuel lines and improving aesthetics. This kit utilizes factory plugs/outputs under the hood for power and communication to the ECU, meaning no additional wiring, cutting, splicing, wiring into the fuse box, or routing through the firewall into the cabin. All hardware and brackets are included for a quick and easy installation. The kit can be installed and uninstalled in minutes. Please note that we do not use an ethanol content gauge as we believe it is unnecessary with our kit. Both Hondata and KTuner V1.2 offer Bluetooth capabilities, and the KTuner V2 LCD screen can be used to display ethanol content if desired. All components are ethanol compatible!
Did you know that the factory fuel line assembly is actually Teflon and highly resistant to ethanol-based fuels?

The factory fuel lines actually consist of an EPDM (fuel and oil resistant synthetic rubber) outer hose and an inner ETFE (another Teflon coating similar to PTFE) liner, providing excellent resistance to various ethanol-based fuels. For this reason, there is no reason to "upgrade" or replace the factory fuel line assembly when using this Ethanol Content Analyzer / Flex Fuel Kit unless it is kinked or damaged (please note the "Do Not Kink" warning on the line).
Why use Ethanol?
With rising gas prices and the push for alternative fuel sources, ethanol, primarily derived from corn, has become a cost-effective and popular fuel choice. Ethanol is now available at most modern gas stations, and the community is now realizing the benefits of ethanol compared to gasoline, such as the fact that it burns cleaner and cooler and is more resistant to detonation. These properties make ethanol a cheap alternative to expensive racing fuels like race gas or methanol, especially for high-compression factory turbocharged vehicles. E85 = 85% ethanol and 15% gasoline, E30 = 30% ethanol and 70% gasoline, etc.
What is Flex Fuel?
In short, "Flex Fuel" allows an internal combustion engine to flexibly utilize one or more different fuels (usually gasoline mixed with ethanol or methanol fuel), with both fuels stored in the same common fuel tank. The Flex-Fuel system utilizes an ethanol content analyzer to measure the amount of ethanol in the fuel system and a converter to send this reading to the vehicle's ECU, which instantly adjusts for various fuel mixtures.
Kit Contents:
- Billet aluminum flex fuel converter case, featuring a sealed and potted board (WiFi)
- Genuine GM Continental ethanol content sensor
- Billet stock location EFI diverter fitting
- Plug-and-play braided wire harness
- Stainless steel mounting bracket
- Stainless steel hardware
Before Ordering
〇 Regarding Import Consumption Tax
At the Shafutoya shopping site, we pay the import consumption tax incurred at the time of import on your behalf, so there are no additional charges other than the total amount paid at checkout.
〇Confirmation of Compatibility
Since all product databases are based on North American vehicles (USDM), please confirm whether or not installation is possible on Japanese vehicles (JDM) before ordering. (Please feel free to contact us if you are unsure if the listed product fits your vehicle. Our support team will investigate for you.)
If you order without confirming compatibility, we cannot accept returns due to incompatibility.
Please note that even if products are sorted by selecting the year, manufacturer, and vehicle model in the tabs on our top page, it does not necessarily mean that they will fit Japanese models without modification.
All products have been translated into Japanese using translation software. As there may be confusing expressions, please contact us before ordering if you have any questions.
○ Regarding Delivery
Shipping costs are paid at the time of settlement. Shipping estimates are calculated automatically when you enter your shipping address on the checkout page. For large items such as body parts, the actual shipping cost may differ significantly from the amount calculated automatically. In such cases, we will contact you individually by email.
All products are basically shipped internationally from our US warehouse. Unlike domestic Japanese shipping, international shipping takes about 7 to 14 days, so please allow enough time for your order. If you are in a hurry, please contact us in advance to check the delivery time. All products are transported via air freight. They are not shipped by sea.
○ Regarding Japanese Vehicle Inspection (Shaken) Compatibility
Please note that all products we handle are basically designed and manufactured outside of Japan. They do not comply with "Japanese vehicle inspection standards," and we cannot provide strength calculation sheets for Japanese inspection purposes. Therefore, all parts are sold for the purpose of "use on circuits, private land, or off-public roads," so please install and use them at your own risk.
○ Regarding Warranty
Please check the contents immediately upon arrival. Since all products are shipped internationally from outside Japan, there may be shipping damage to the packing boxes or products. We will only provide returns, refunds, or replacement exchanges for items with shipping damage, defective products, or products different from what you ordered if you contact us within 7 days of receipt. Please understand that for products sold through us, we will provide warranty support "only through us." Please note that we do not provide support through other companies or distributors located in Japan.
