PRL Flex Fuel Kit w/WiFi Ethanol Content Analyzer | 16-21 Civic 1.5T & Si

Fits:

• 2016 - 2021 Honda Civic 1.5T
• 2017 - 2020 Honda Civic Si

Does not include an ethanol content gauge — Hondata and KTuner V1.2 offer Bluetooth monitoring, and the KTuner V2 LCD screen can display ethanol content directly if you want a dashboard readout. The factory fuel line assembly is Teflon-lined and already highly resistant to ethanol fuels, so there's no need to replace it unless it's kinked or damaged.

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Running ethanol blends gives you a cheaper alternative to race gas or methanol — it burns cleaner, cooler, and resists detonation better than pump gasoline, which matters a lot on a factory turbocharged engine. A flex fuel setup lets your ECU read the ethanol content in real time and adjust for it, so you can safely run anything from straight gasoline to E85 out of the same tank.

PRL's kit reads ethanol content wirelessly to any smart device, and can output a configurable 0.5-4.5V signal to your tuning device to enable true flex fuel operation. It taps into the factory fuel line and uses factory under-hood plugs for power and ECU communication — no cutting, splicing, or running wires through the firewall into the cabin. Installation and removal both take minutes, not hours.

Features

• Wireless ethanol content monitoring via smart device (WiFi)
• Configurable 0.5-4.5V output for flex fuel tuning
• Plug-and-play install using factory fuel line and under-hood connections — no cutting or splicing
• Installs and uninstalls in minutes
• Compatible with Hondata and KTuner (Bluetooth on V1.2, on-screen display on V2)
• Kit includes: billet aluminum converter case (sealed/potted board), genuine GM Continental ethanol content sensor, billet EFI diverter fittings, plug-and-play braided wiring harness, stainless mounting bracket and hardware