SPOOL Audi C8 RS6 Avant EA825 E85 Ethanol Analyzer Kit

SPOOL Audi C8 RS6 Avant EA825 E85 Ethanol Analyzer Kit

Take your Audi C8 RS6 Avant to the next level with the Spool Performance Ethanol Analyzer Kit. Built for enthusiasts who want power, safety, and zero guesswork, this kit gives you fast, accurate ethanol readings so you always know exactly what’s in your tank—whether it’s pump gas, a mix, or full E85.

Spool Performance designed this kit to be as clean and simple as possible. It fits the C8 RS6 perfectly, installs with minimal hassle, and uses proven, high-quality components that are fully ethanol-safe. The result? Reliable data, better performance, and total peace of mind.

Key Highlights

• Made for the C8 RS6 – No universal shortcuts. A clean, proper fit for your Audi.

• Instant Ethanol Readings – Know your E-content at all times for safe, consistent performance.

• Premium Spool Components – Durable, accurate, and built to handle high-power setups.

• Easy Install – Plug-and-play style harnesses and tidy routing.

• Tuner-Friendly – Works seamlessly with flex-fuel tunes and digital displays.

If you’re running E85 or planning to go flex-fuel, this is one of the smartest upgrades you can make. More power, more safety, and full confidence—exactly what you expect from Spool Performance.

• Free US shipping on orders over $250.
• Free pickup at our Dallas shop, usually ready within 24 hours.
• Unused parts can be returned within 30 days. Tunes, opened electronics, merch and installed parts are final sale.
• Want it installed? Book the install at thegbmotors.com.

Full details are on our shipping and returns page.