PRL Motorsports Ethanol Flex Fuel Kit for FK8 / FL5 Honda Civic Type R
$580.00
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PRL’s Flex Fuel Kit for FK8 / FL5 Civic Type R is a Wi-Fi ethanol content analyzer that plugs into the factory fuel line and connectors, with wireless monitoring from any smart device and an optional 0.5-4.5V tuner output.
These items are typically not in stock and either made-to-order or special order from the manufacturer. After you order we will confirm the estimated lead time and other order details. If you have a specific deadline to receive this order please talk to us before placing your order to ensure that the manufacturer can meet your expectations.
This item and any similar items are not CARB approved and therefore not for sale in the state of California or other states that require CARB certification. No assessment is being made regarding this product's compliance with the EPA's anti tampering policy, only that the necessary testing and validation has not been completed. Please check with your local enforcement officials regarding legality of use in your place of residence.
PRL Motorsports Ethanol Flex Fuel Kit for FK8 / FL5 Honda Civic Type R
PRL Flex Fuel Kit for FK8 / FL5 Honda Civic Type R, a Wi-Fi Flex-Fuel / Ethanol Content Analyzer Kit, enables wireless monitoring of ethanol content through any smart device and supports flex fuel with an optional 0.5-4.5V output for tuning devices. Its unique patent pending design integrates with the factory fuel line, reducing the risk of deterioration in alternative fuel lines and enhancing appearance. The Flex Fuel Kit for FK8 / FL5 connects to factory plugs and outputs for power and ECU communication, eliminating extra wiring, cutting, or interior cable routing. It includes all necessary hardware and brackets for easy installation and can be fitted or removed quickly. The kit is compatible with Hondata and KTuner V1.2, both featuring Bluetooth, and the KTuner V2 LCD screen can display ethanol content. All components are designed to be ethanol compliant.
Factory ETFE Honda / Acura Fuel Hose
The factory fuel line is made from an EPDM (fuel and oil resistant synthetic rubber) outer hose with an inner ETFE (a Teflon-like coating similar to PTFE) liner. This composition provides excellent resistance to various fuels, including those based on ethanol. Consequently, there is no need to “upgrade” or replace the factory fuel line assembly when it is used with the Flex Fuel Kit for FK8 / FL5, unless it is kinked or damaged.
Why Run Ethanol?
Ethanol, mainly sourced from corn, has emerged as a popular and economical fuel option as gasoline prices rise and demand for alternative fuels grows. This fuel type is now widely available at most modern gas stations, and its advantages over gasoline are becoming well-known. Ethanol is recognized for burning cleaner and cooler and for its higher resistance to detonation. These properties make ethanol an affordable substitute for costly racing fuels like race gas or methanol, particularly in high compression, factory turbocharged vehicles. For example, E85 consists of 85% ethanol and 15% gasoline, while E30 contains 30% ethanol and 70% gasoline, and so forth.
What is Flex Fuel?
Essentially, “flex-fuel” refers to the ability of an internal combustion engine to use a combination of fuels, typically a blend of gasoline with either ethanol or methanol, which are stored together in the same fuel tank. Systems designed for flex-fuel, like the Flex Fuel Kit for FK8 / FL5, employ an ethanol content analyzer to assess the ethanol percentage in the fuel system. They also include a converter that relays this information to the vehicle’s ECU (Engine Control Unit), allowing for immediate adjustments to accommodate different fuel mixtures.
PRL Flex Fuel Kit for FK8 Features
Wi-Fi Flex Fuel Kit for FK8 / FL5 with wireless ethanol content monitoring through any smart device
Optional 0.5-4.5V output for tuning devices
Patent pending design that integrates with the factory fuel line
Connects to factory plugs and outputs, with no extra wiring, cutting, or interior cable routing
Quick to fit and quick to remove, with all necessary hardware and brackets included in the Flex Fuel Kit for FK8 / FL5
Compatible with Hondata and KTuner V1.2, both featuring Bluetooth
KTuner V2 LCD screen can display ethanol content
All components designed to be ethanol compliant
What’s Included
Billet aluminum flex-fuel converter case with sealed and potted board (Wi-Fi)
The Flex Fuel Kit for FK8 / FL5 fits all variant models including RHD and international models
The Flex Fuel Kit for FK8 / FL5 is NOT compatible with PRL PTFE fuel lines
FK8 Civic Type R is ONLY compatible with Hondata
The Flex Fuel Kit for FK8 / FL5 does NOT utilize an ethanol content gauge
Heed the “Do Not Kink” warning label on the fuel lines
Frequently Asked Questions
What vehicles does the PRL Flex Fuel Kit for FK8 / FL5 fit? The Flex Fuel Kit for FK8 / FL5 fits the 2017-2021 Honda Civic Type R (FK8) and the 2023+ Honda Civic Type R (FL5), both with the 2.0L turbo I4 K20C1 engine, including all variant models such as RHD and international models. The FK8 Civic Type R is only compatible with Hondata.
What does the PRL Flex Fuel Kit for FK8 / FL5 do? The kit is a Wi-Fi ethanol content analyzer. It measures the ethanol percentage in the fuel system, relays it to the ECU through a converter so the vehicle can adjust immediately to different fuel mixtures, and lets you monitor ethanol content wirelessly from any smart device. An optional 0.5-4.5V output supports tuning devices.
Do I need to replace the factory fuel line with the Flex Fuel Kit for FK8 / FL5? No. The factory fuel line has an EPDM outer hose with an inner ETFE liner that resists various fuels, including ethanol-based fuels. There is no need to upgrade or replace it when using the Flex Fuel Kit for FK8 / FL5, unless it is kinked or damaged. Heed the “Do Not Kink” warning label.
Why run ethanol with the PRL Flex Fuel Kit for FK8 / FL5? Ethanol burns cleaner and cooler and has a higher resistance to detonation, making it an affordable substitute for costly racing fuels like race gas or methanol in high compression, factory turbocharged vehicles. E85 is 85% ethanol and 15% gasoline, and E30 is 30% ethanol and 70% gasoline.
Is the PRL Flex Fuel Kit for FK8 / FL5 compatible with PRL PTFE fuel lines? No. The Flex Fuel Kit for FK8 / FL5 is NOT compatible with PRL PTFE fuel lines. It integrates with the factory fuel line, and it does not utilize an ethanol content gauge.
How does the Flex Fuel Kit for FK8 / FL5 install? The kit connects to factory plugs and outputs for power and ECU communication, so installation needs no extra wiring, cutting, or interior cable routing. It includes all necessary hardware and brackets, a plug-and-play braided wiring harness, and stock location EFI diverter fittings, and it can be fitted or removed quickly.
About PRL Motorsports
PRL Motorsports started in 2007 as PRL Racing, a small group of enthusiasts outside Pittsburgh, Pennsylvania, united by a single goal: faster lap times. What began trackside quickly earned a reputation for engineering excellence, producing race cars capable of 9-second quarter-mile passes as early as 2007 and 6-second times by 2009. By 2011, the operation had grown into PRL Motorsports, expanding from trackside tuning into full-scale product development and fabrication across Honda, Nissan, Mitsubishi, and Subaru platforms. In 2018, PRL Motorsports made a deliberate shift to focus entirely on manufacturing, concentrating their resources on engineering and producing performance components rather than installation and tuning services. Today, PRL Motorsports operates from a 25,000 sq/ft facility in Export, Pennsylvania, staffed by over 25 professionals and equipped with CNC machining departments, automated cutting stations, dual-spindle lathes, 5-axis milling centers, and robotic loading systems running 24-hour production capacity. Their catalog covers intercooler systems, intake systems, turbocharger systems, exhaust components, and throttle body and intake manifold adapters, many of which carry CARB compliance and SEMA Garage certification. From a 9-second S13 to tuning the first 10th-generation Civic into the 10-second range in 2019, PRL Motorsports has built its reputation on one principle: never settle, always push for the best possible outcome.
Additional Information
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Shipping Policy
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Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.
BP Pricing Difference
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We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well.
For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.
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