Air and Fuel› Performance Packages

INFINITI

VQ37 Flex Fuel Kit

$533.50

SKU: AAMC37F-FLEXFUELKIT-G

Special Order
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Overview

The Specialty-Z Flex Fuel Kit is designed for the Nissan 370Z and Infiniti G37 with the VQ37 engine. It allows your vehicle to run on E85 or a mixture of E85 and gasoline. The kit includes a Continental Ethanol Sensor and a CAN Flex Bluetooth Analyzer. Installation is straightforward, with options for naturally aspirated or boosted applications.
Show original supplier description
The Specialty-Z Flex Fuel Kit enables your VQ37-powered Nissan 370Z or Infiniti G37 to seamlessly transition between gasoline and E85 fuel blends. This system integrates a Continental Ethanol Sensor and a CAN Flex Bluetooth Analyzer, allowing you to monitor ethanol content via a smartphone app. Two kit options are available: The Naturally Aspirated (NA) version utilizes a modified OEM fuel supply hose with an in-line Continental E% sensor that connects via quick connects. Both kits include the Continental Ethanol Sensor (GM style) and the CAN Flex Bluetooth Analyzer. A key feature is the CAN input option, which connects to the ECU via a single 12V, ground, and E% output pin, avoiding the need to hijack an analog input. However, it is important to note that EcuTek has not yet released CAN input capabilities for their VQ37 tuning suite; therefore, analog input will be required for current tuning. The system can be rewired to utilize CAN once the tuning suite is updated. Users can select either CAN or Analog input via the CANFlex phone app, but both cannot be used simultaneously. Crucially, both the NA and Boosted Flex Fuel Kits require an EcuTek tune for proper functionality. This product is intended for off-road vehicles only. Please verify local and state laws before purchase. Minimum 1050cc injectors are recommended.

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

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Specifications

BrandINFINITI
Part NumberAAMC37F-FLEXFUELKIT-G
CategoryAir and Fuel
5,000+ Trusted brands
1M+ Enthusiasts
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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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