PRL Flex Fuel Kit for Civic/Accord 1.5T/2.0T

PRL Motorsports WiFi Flex Fuel / Ethanol Content Analyzer Kit - Honda & Acura 1.5T / 2.0T

E85 is the cheapest real power available to a turbo Honda. It burns cooler, resists detonation far better than pump gas, and it costs a fraction of race fuel. The catch is that ethanol content varies, station to station and season to season, and your tune needs to know what's actually in the tank. This PRL kit tells it. A genuine GM Continental sensor reads ethanol content in real time, a WiFi module puts that reading on your phone, and an optional voltage output feeds it straight to your tuning device so the car adjusts itself.

It Uses Your Factory Fuel Line

This is the part that separates PRL's kit from everything else, and it's worth understanding why it matters.

Most flex fuel kits have you replace or cut into your fuel line to plumb in the sensor. PRL's patent-pending design uses the factory line with billet stock-location EFI diverter fittings instead. That means no aftermarket fuel line to eventually deteriorate, no fittings to weep years later, and a bay that still looks factory.

And here's the thing most people don't know: your factory fuel line is already excellent with ethanol. Honda builds it with an EPDM outer hose and an inner ETFE liner, which is a Teflon coating closely related to PTFE. It's genuinely resistant to ethanol-based fuels straight from the factory.

So there's no reason to "upgrade" your fuel line for E85 unless yours is kinked or damaged. That's money a lot of people spend unnecessarily, and PRL designed this kit around the fact that they don't need to.

No Gauge, Just Your Phone

PRL deliberately skipped the ethanol content gauge, and we think that's the right call. The WiFi module broadcasts your ethanol content to any smart device, so you check it on your phone when you want to know rather than staring at another gauge pod cluttering up your interior.

If you're running Hondata or KTuner V1.2, both offer Bluetooth so you can see content there too. KTuner V2 owners can display it right on the LCD screen. Between those options there's no scenario where you're guessing at what's in your tank.

Optional Voltage Output For Real Flex Fuel

Monitoring is useful. Actual flex fuel is better.

The kit includes a configurable 0.5V to 4.5V output that feeds ethanol content directly to your tuning device or datalogger. With that connected and a proper flex fuel tune, the ECU adjusts fueling and timing on the fly as your blend changes. Fill up with E85 one week and pump gas the next, and the car sorts itself out without you touching anything.

That's the whole appeal of flex fuel. You're not committed to one fuel or locked into whatever the last tune assumed.

Genuinely Plug And Play

No cutting, no splicing, no running wires through the firewall. The kit uses factory plugs and outputs under the hood for both power and ECU communication, so you're not fishing wire into the cabin or tapping the fuse box.

All hardware and bracketry is included, and PRL notes the kit can be installed or uninstalled in minutes. That reversibility is worth something if you ever sell the car or want to return it to stock.

One Compatibility Note

Important before you order: this kit is not compatible with PRL PTFE fuel lines. The diverter fittings are designed around the factory line assembly. If you've already fitted PRL's PTFE lines, this isn't the right kit for your setup.

Why Run Ethanol At All

If you're new to E85, here's the short version.

Ethanol burns cooler and cleaner than gasoline and resists detonation dramatically better. On a factory turbocharged engine running meaningful compression, that knock resistance is what lets a tuner run more timing and more boost safely. It's effectively cheap race fuel, available at ordinary gas stations, at a fraction of what actual race gas or methanol costs.

The blends are straightforward: E85 is 85% ethanol and 15% gasoline, E30 is 30% ethanol, and so on. Real-world content varies within those labels, which is exactly why a content analyzer matters rather than assuming what you pumped.

What's In The Kit

• Billet aluminum flex fuel converter case with sealed and potted WiFi board
• Genuine GM Continental ethanol content sensor
• Billet stock-location EFI diverter fittings
• Plug and play braided wiring harness
• Stainless mounting bracket
• Stainless hardware

Every component is ethanol compliant.

Pick Your Application

Each platform gets its own kit, so match yours carefully:

Two things worth checking. Accord owners need to know whether they've got the 1.5T or the 2.0T, since those are different kits. And Integra owners split by trim: Base and A-Spec take the HC11 kit, while the Type S takes the HCR kit.

All variants covered including 6MT, CVT, 10AT, RHD, and international models. Not compatible with PRL PTFE fuel lines.

Who Should Run This Kit

This is for the turbo Honda or Acura owner ready to move to ethanol and wanting to do it properly. Whether you're monitoring content to keep a tune honest or running full flex fuel so the car adapts to whatever you put in it, this is the cleanest way to get there. No fuel line to replace, no wires through the firewall, no gauge cluttering your interior. Get your tuning sorted, bolt it on, and go make cheap power.

Fits: see the application table above. Sensor: genuine GM Continental ethanol content sensor. Monitoring: WiFi to any smart device, no gauge required. Flex fuel output: configurable 0.5V to 4.5V for tuning devices and dataloggers. Fuel line: uses the factory line with billet stock-location diverter fittings, no fuel line replacement needed. Install: plug and play using factory plugs, no cutting, splicing, or firewall pass-through. Not compatible with: PRL PTFE fuel lines.