Does the R35 flex fuel kit include an ethanol content display?

No. T1 Race Development does not include a gauge or display, because both Cobb and EcuTek let the driver view ethanol content through their own tools. The kit supplies the sensor, converter box, harness and plumbing, and the reading appears wherever the chosen tuning platform shows it.

Do I need a tune to use the T1 Flex Fuel Kit for R35?

Yes. The T1 Flex Fuel Kit for R35 delivers the ethanol content signal to the factory ECU, and the tune is what uses it to change fueling and timing as the blend changes. T1 points to Cobb and EcuTek, which both display ethanol content, so plan the calibration with your tuner first.

Will this kit work with aftermarket fuel rails?

No. This version includes a rail adapter that converts the factory R35 fuel rail inlet to AN threads, so it suits cars on the stock rails. T1 sells a separate version for aftermarket rails with 6AN ORB or 8AN ORB inlets.

Why does T1 mount the ethanol sensor on the pressure side?

On the pressure side the sensor always sees fuel moving toward the injectors. A sensor in the return line can read unreliably when return flow drops, which happens as the fuel pumps near their maximum output. The move was one of the two changes T1 made for the second generation.

How difficult is the R35 flex fuel kit to install?

Plan it as proper fuel-system work. Fuel pressure is relieved at the firewall, the intake manifold comes off to route the new lines, and the sensor bracket bolts to the rear of the manifold. The harness is plug-and-play, but the fuel work calls for care and a cool engine, and T1 advises a qualified technician.

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Description

T1 Race Development GT1R Gen 2 Flex Fuel Kit for R35 Nissan GT-R with Stock Fuel Rails

T1 Race Development’s GT1R Gen 2 Flex Fuel Kit for R35 Nissan GT-R gives the factory ECU a live reading of ethanol content, so the tune can adjust fueling and timing to whatever blend is in the tank. The second generation moves the sensor to the pressure side of the fuel system, where it keeps reading accurately even as return flow falls away near the limit of the pumps. Drawing on years of record-setting GT-R builds, T1 made this generation plug-and-play on every model year. For an owner chasing ethanol power without guessing at the mix, it is the tidy route.

Design and Performance

A converter box turns the digital signal from the ethanol sensor into the 0-5 V input the stock ECU expects. The sensor sits on its own bracket at the back of the intake manifold, fed by a rail adapter on the passenger-side (Bank 1) fuel rail that converts the factory inlet to AN threads. Race Spec assembles the harness from Mil-Spec Tefzel wire, Raychem DR-25 heat shrink and new connectors.

Features

Ethanol sensor on the pressure side of the fuel system for steady readings at high fuel demand
Plug-and-play harness and fitment on every R35 model year
ECU signal of 0.5 V at 0 percent ethanol and 4.5 V at 100 percent

What’s Included

Ethanol content sensor and mounting bracket
Flex fuel converter box
Plug-and-play wiring harness
Redhorse Performance ethanol-compatible fuel lines with crimped hose ends and EFI fittings
Fuel rail adapter for the factory rail inlet

Applications

Nissan GT-R: R35 | 2009-2024 | 3.8L VR38DETT V6

Notes

No ethanol content display is included; the reading is viewed through Cobb or EcuTek
This Flex Fuel Kit for R35 fits the factory fuel rails; aftermarket rails need the separate T1 Race Development GT1R Gen 2 Flex Fuel Kit with Aftermarket Fuel Rails (GT1R-FF-gen-2-aftermarket-rails) for 6AN ORB or 8AN ORB inlets
Ethanol blends call for more fuel than gasoline, and the kit pairs with the Injector Dynamics ID1300x2 Injector Set (1300.48.14.R35.6), the DeatschWerks DW300C Fuel Pump Kit (9-309-1009) and the Injector Dynamics USCAR to Denso PnP Adapter (90.3)

Frequently Asked Questions

Does the R35 flex fuel kit include an ethanol content display? No. T1 Race Development does not include a gauge or display, because both Cobb and EcuTek let the driver view ethanol content through their own tools. The kit supplies the sensor, converter box, harness and plumbing, and the reading appears wherever the chosen tuning platform shows it.
Do I need a tune to use the T1 Flex Fuel Kit for R35? Yes. The T1 Flex Fuel Kit for R35 delivers the ethanol content signal to the factory ECU, and the tune is what uses it to change fueling and timing as the blend changes. T1 points to Cobb and EcuTek, which both display ethanol content, so plan the calibration with your tuner first.
Will this kit work with aftermarket fuel rails? No. This version includes a rail adapter that converts the factory R35 fuel rail inlet to AN threads, so it suits cars on the stock rails. T1 sells a separate version for aftermarket rails with 6AN ORB or 8AN ORB inlets.
Why does T1 mount the ethanol sensor on the pressure side? On the pressure side the sensor always sees fuel moving toward the injectors. A sensor in the return line can read unreliably when return flow drops, which happens as the fuel pumps near their maximum output. The move was one of the two changes T1 made for the second generation.
How difficult is the R35 flex fuel kit to install? Plan it as proper fuel-system work. Fuel pressure is relieved at the firewall, the intake manifold comes off to route the new lines, and the sensor bracket bolts to the rear of the manifold. The harness is plug-and-play, but the fuel work calls for care and a cool engine, and T1 advises a qualified technician.

About T1 Race Development

T1 Race Development was founded in Texas in 2005 by Tony Palo, whose 2000 Acura Integra GSR became the first eight-second front-wheel-drive street car before the shop turned its attention to the Nissan GT-R. T1 went on to become the first to exceed 230 mph in the half mile in a GT-R and the first to make 2,400 whp from the VR38DETT, and it now develops engines, drivetrain parts and complete builds for the R35 GT-R, Lamborghini Huracan and Audi R8.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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T1 Race Development GT1R Gen 2 Flex Fuel Kit for R35 Nissan GT-R with Stock Fuel Rails

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T1 Race Development GT1R Gen 2 Flex Fuel Kit for R35 Nissan GT-R with Stock Fuel Rails

Design and Performance

Features

What’s Included

Applications

Notes

Frequently Asked Questions

About T1 Race Development

Reviews