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Flex Fuel Management System Conversion Kit - Performance, QFS-E85VQ High Flow Fuel

$427.98
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SKU:
QFS-E85VQ-BC
MPN:
QFS-E85VQ
UPC:
840477721202
Availability:
In stock, ready to ship
Weight:
1.61 LBS

High Flow Fuel pumps by Quantum Fuel Systems

Convert your Nissan 350Z/ 370Z or infiniti G35/G37 to E85 using Genuine Bosch 550cc fuel injectors and direct-fit 340LPH in-tank pump. Plug and play injector adapters included.

NOTE: Tuning will need to be done to accommodate for larger injectors.

WARNING

This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm.  For more information go to www.P65Warnings.ca.gov.

Brand Name:
Quantum
Quantum brand products are backed by an industry-leading lifetime warranty. For fuel pumps, assemblies, regulators, and check valves, we will replace any unit that fails due to a defect in workmanship or materials for as long as you own the vehicle.

Serviceable & Wear Items: Please note that fuel filters, strainers, and rubber components (seals/grommets) are considered maintenance items. While these are protected against manufacturing defects, the lifetime warranty does not cover replacement for items that have reached the end of their functional service life due to normal debris accumulation or natural material aging (such as cracking or swelling from long-term fuel exposure).

This warranty applies only to the original purchaser and is non-transferable. Improper use or installation voids the warranty. Quantum is not responsible for incidental costs resulting from product failure. Contact customer service to troubleshoot, diagnose issues, and file a warranty claim.

QFS-E85VQ Flex Fuel Management System Conversion Kit for Nissan 350Z, 370Z, Infiniti G35, and G37

QFS-E85VQ is a complete flex fuel conversion kit engineered to convert the Nissan 350Z, Nissan 370Z, Infiniti G35, and Infiniti G37 to run E85 ethanol fuel. The kit pairs a high-volume 340LPH in-tank fuel pump with Genuine Bosch 550cc fuel injectors, providing the upgraded fueling capacity E85 conversions require.

Engineered for VQ-Powered Nissan and Infiniti Platforms

Engineered for VQ-Powered Nissan and Infiniti Platforms

This conversion kit is purpose-built for the VQ35 and VQ37 platforms found in the Nissan 350Z, Nissan 370Z, Infiniti G35, and Infiniti G37. The components are sized to match the fuel demands of these high-output, naturally aspirated engines when running E85 or pump gasoline, giving owners a turnkey performance-fueling solution.

Includes Genuine Bosch 550cc Fuel Injectors

Includes Genuine Bosch 550cc Fuel Injectors

E85 requires roughly 30 percent more fuel volume than gasoline to maintain the correct air-fuel ratio, which is why larger injectors are mandatory. QFS-E85VQ includes Genuine Bosch 550cc injectors with plug-and-play adapters, providing the additional flow capacity needed for full E85 operation while delivering the proven reliability Bosch is known for.

Direct-Fit 340LPH In-Tank Fuel Pump

Direct-Fit 340LPH In-Tank Fuel Pump

A 340-liter-per-hour direct-fit in-tank fuel pump is included to deliver the increased fuel volume demanded by E85 combustion. The pump installs in the factory tank location without modification, providing the steady high-volume flow required to keep the upgraded injectors fed at all RPM levels and throttle positions.

A Complete E85 Conversion Solution for VQ-Powered Performance Cars

Running E85 unlocks meaningful power gains thanks to its higher octane rating and cooling effect on the intake charge. QFS-E85VQ delivers every hardware component required for a proper conversion in one kit, eliminating the need to source pumps, injectors, and adapters separately and ensuring the components are matched to perform together.

Plug-and-Play Injector Adapters Included

Plug-and-Play Injector Adapters Included

The kit includes plug-and-play injector adapters that allow the Bosch 550cc injectors to connect directly to the factory wiring harness. No splicing, soldering, or harness modifications are required. This simplifies installation significantly and eliminates the risk of electrical faults that can occur when retrofitting larger injectors into a stock electrical system.

ECU Tuning Required to Match Larger Injectors

ECU Tuning Required to Match Larger Injectors

Larger injectors deliver more fuel per pulse than the OEM units, which means the ECU must be retuned to account for the increased flow rate and the different stoichiometric ratio of E85. Tuning is required to safely operate this kit, and the conversion should be completed by a tuner experienced with VQ platforms.

Backed by QFS Lifetime Warranty on the Fuel Pump

Backed by QFS Lifetime Warranty on the Fuel Pump

Quantum Fuel Systems is American-owned, and an industry-leading lifetime warranty backs the 340LPH fuel pump in this kit against defects in workmanship and materials. The Bosch fuel injectors are covered under the Bosch warranty, providing comprehensive protection for the kit's critical components for the original purchaser of the conversion.

Frequently Asked Questions

QFS-E85VQ provides the upgraded fueling hardware required to run E85 ethanol fuel in the Nissan 350Z, Nissan 370Z, Infiniti G35, and Infiniti G37. It supplies the increased fuel volume and injector flow capacity needed for proper E85 operation, addressing the fuel system limitations that make stock components unsuitable for ethanol conversion.

QFS-E85VQ is engineered for the Nissan 350Z, Nissan 370Z, Infiniti G35, and Infiniti G37 powered by the VQ35 and VQ37 engine platforms. The 340LPH in-tank pump is a direct-fit replacement, and the Bosch 550cc injectors include plug-and-play adapters that match the factory wiring connectors on these platforms.

E85 offers a higher octane rating than pump gasoline, allowing for more aggressive ignition timing and increased power output. It also produces a stronger cooling effect on the intake charge, reducing the risk of detonation. For VQ-powered cars seeking additional horsepower without forced induction, E85 is a cost-effective performance upgrade path.

Yes. The 550cc Bosch injectors deliver significantly more fuel per pulse than the OEM units, and E85 requires roughly 30 percent more fuel volume than gasoline. The ECU must be re-tuned to account for the new injector size and fuel chemistry. Tuning should be performed by a qualified tuner familiar with VQ platforms.

The hardware in QFS-E85VQ is compatible with both pump gasoline and E85, supporting flex fuel operation when paired with appropriate tuning. Many tuners configure flex fuel maps that allow the vehicle to automatically adapt to varying ethanol percentages, providing the flexibility to run either fuel type based on availability and performance goals.

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