APE X85 E85 Flex Fuel Kit

APE X85 (EV1) E85 Flex Fuel Kit for Straight 6

$749.00 $600.00

The APE X85 Flex Fuel Kit is the most capable and dynamic flex fuel kit on the market for the S54 motors in the E46 M3 and Z3/4Ms. With this kit, you can achieve 20+whp gains for less than $600 (better hp/$ ratio than headers)! Group buy closes on May 31st, 2019 at 11:59:59 PM PST.


International shipping available – please email [email protected] if you need your kit shipped outside of the USA.

SKU 84796 Category Tag


APE X85 – EV1 – Straight 6 Wiring Harness Configuration

Introducing the APE X85 Flex Fuel Power Module. This is a plug and play module that can easily be installed in your vehicle to give you the benefits of running Flex Fuel.

APE X85 Power Module for E85 Flex Fuel Kit

Increase Performance

APE X85 Power Module for E85 Flex Fuel Kit

Cooler Engine Temps

APE X85 Power Module for E85 Flex Fuel Kit

Lower Emissions

Advanced Bluetooth® App Controls

Use your iPhone® and Android™ (currently in development) app to access the Power Module settings straight from your phone. Monitor and adjust the X85 Power Module settings to achieve optimal settings for your car.

Live Ethanol Percentage

The beauty of the Flex Fuel kit is that you don't need a specific E85 tune with E85 fuel. You can run any mixture with gasoline!

APE X85 E85 Flex Fuel Kit
APE X85 E85 Flex Fuel Kit

Live Injector Pulse Reading

Our stock E46 M3 injectors can't handle full E85 so you can see the injector duty cycle readings to optimize your ethanol content.

Ethanol Content Calculator

Use the built-in ethanol calculator to figure out how much ethanol and gasoline you need to mix to achieve target mixture.

APE X85 E85 Flex Fuel Kit
APE X85 E85 Flex Fuel Kit

Advanced Tuning Features

Use the custom fuel multiplier adjustment to fine tune your mixture to each RPM range.

Options, options, options

There are tons of options on the app! This product offers more options than any other kit on the market out there.

APE X85 E85 Flex Fuel Kit

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