Air and Fuel› Performance Packages

MODE Auto Concepts

N54 Flex Fuel Box

$200.00

SKU: MOTIV-FLEX-FUEL-BOX-FOR-MHD

In Stock
In Stock
Ships by Sep 9
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The MOTIV Flex Fuel Box is an integration tune designed for the N54 platform. Developed by MHD in collaboration with MOTIV, it allows for OEM-level flex fuel capability. This system enables seamless interpolation between pump gas and full E85 maps, accommodating all blends in between without requiring manual map changes.
Show original supplier description
The MOTIV Flex Fuel Box is the sole true flex fuel integration tune specifically for the N54 platform, developed through a collaboration between MHD and MOTIV. This innovative system brings OEM Flex Fuel capabilities to the automotive community by creating custom logic for DME integration. With the MOTIV Flex Fuel Box, your vehicle can seamlessly interpolate between a pump gas map and a full E85 map, as well as every blend in between, without the need for manual adjustments. This means you can fill up with any ethanol blend and drive without touching a thing, offering unparalleled convenience and performance flexibility. This system is compatible with both flash-only and JB4 back-end flash users. To implement flex fuel with MHD using the MOTIV Flex Fuel Box, you will need the box itself with its included PNP harness, an installed Ethanol Content Sensor (various options are available), and the MHD Flex Fuel Module, which is purchased separately from the MHD license store.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandMODE Auto Concepts
Part NumberMOTIV-FLEX-FUEL-BOX-FOR-MHD
CategoryAir and Fuel

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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