Do the COBB Tuning Top Feed 1050x Fuel Injectors require a tune?

Yes. COBB says these injectors hold stock idle and driveability only with proper tuning, and it supplies injector data for tuning them in Accesstuner software. Plan on an Accessport with a custom map from a COBB Protuner before driving on them.

Can I run E85 with these injectors?

Yes, the injectors themselves are suited to it. COBB describes the internals as corrosion resistant and compatible with all known fuels, and it pitches the set at owners who want to run E85. COBB pairs them with a fuel pump and a tune, so budget for both.

Do the Top Feed 1050x Fuel Injectors fit the factory fuel rail?

Yes. COBB lists the Top Feed 1050x Fuel Injectors as working with the stock fuel rail on the listed Subaru models, using a 14mm bottom O-ring and a USCAR electrical connector. Check your year and body style against the Applications list first.

Is this injector set legal in California?

No. COBB states the injectors are not legal for sale or use in California on any emission controlled motor vehicle while CARB testing is pending. Outside California, COBB says the part is legal for street use in states that accept the Clean Air Act and the EPA Anti-Tampering Policy, based on its own testing.

Will these injectors fit a 2015 or newer Subaru WRX?

No. The 2015 to 2021 WRX STI sedan is on the COBB application list, but the 2015 and newer WRX is not. The list covers the 2002 to 2014 Impreza WRX, 2007 to 2021 STI, Legacy GT, Forester XT and Impreza 2.5 GT years shown above.

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Description

COBB Tuning Top Feed 1050x Fuel Injectors for Subaru WRX, STI, Legacy GT and Forester XT

COBB Tuning’s Top Feed 1050x Fuel Injectors raise fuel delivery on turbocharged Subaru engines that use top feed injectors, with a nominal flow of 1065cc/min at 3.0 bar measured on gasoline. That headroom is what an E85 conversion or a larger turbo calls for, and COBB rates the internals as compatible with all known fuels. They are a supporting part that wants a fuel pump and a tune alongside them; an owner staying on pump gas at factory boost has little reason to buy them yet.

Fueling and Tuning

With a calibration set up for them, these injectors keep factory-like idle and drivability while carrying far more fuel at the top end. Corrosion resistant internals extend service life on ethanol blends. COBB publishes injector data for Accesstuner, which gives a tuner a solid starting point when scaling the Top Feed 1050x Fuel Injectors.

Features

Corrosion resistant internals rated for all known fuels, including E85
Replaceable inlet filter for longer service life
Works with the stock fuel rail
Supplied as a flow-matched set
Injector data supplied for tuning with Accesstuner software

Specifications

Nominal Flow Rate: 1065cc/min at 3.0 bar (43.5 psi) on gasoline at 52 C (125 F)
Maximum Differential Fuel Pressure: 10.0 bar (145.0 psi)
Flow Matching: Dynamic flow rate variance within 1% across the set
Feed Type: Top feed
Bottom O-Ring: 14mm
Electrical Connector: USCAR

Applications

Subaru Forester XT: 2006-2013 | Automatic only for 2009-2013 | USDM
Subaru Impreza 2.5 GT: 2009-2010 | Automatic | USDM
Subaru Impreza WRX: GD/GG | 2002-2007 | USDM
Subaru Impreza WRX: GR/GV | 2008-2014 | USDM and ADM
Subaru Impreza WRX STI: GD | 2007 | Manual | USDM
Subaru Impreza WRX STI: GR/GV | 2008-2014 | Manual | USDM and ADM
Subaru Legacy GT: 2007-2012 | Automatic for 2007-2009 only | USDM
Subaru WRX STI: VA | 2015-2021 | Manual | USDM and ADM

Notes

Requires tuning
Accessport, fuel pump and tune are sold separately
Not legal for sale or use in California on any emission controlled motor vehicle; CARB testing is pending
Not listed for the 2015 and newer Subaru WRX

Frequently Asked Questions

Do the COBB Tuning Top Feed 1050x Fuel Injectors require a tune? Yes. COBB says these injectors hold stock idle and driveability only with proper tuning, and it supplies injector data for tuning them in Accesstuner software. Plan on an Accessport with a custom map from a COBB Protuner before driving on them.
Can I run E85 with these injectors? Yes, the injectors themselves are suited to it. COBB describes the internals as corrosion resistant and compatible with all known fuels, and it pitches the set at owners who want to run E85. COBB pairs them with a fuel pump and a tune, so budget for both.
Do the Top Feed 1050x Fuel Injectors fit the factory fuel rail? Yes. COBB lists the Top Feed 1050x Fuel Injectors as working with the stock fuel rail on the listed Subaru models, using a 14mm bottom O-ring and a USCAR electrical connector. Check your year and body style against the Applications list first.
Is this injector set legal in California? No. COBB states the injectors are not legal for sale or use in California on any emission controlled motor vehicle while CARB testing is pending. Outside California, COBB says the part is legal for street use in states that accept the Clean Air Act and the EPA Anti-Tampering Policy, based on its own testing.
Will these injectors fit a 2015 or newer Subaru WRX? No. The 2015 to 2021 WRX STI sedan is on the COBB application list, but the 2015 and newer WRX is not. The list covers the 2002 to 2014 Impreza WRX, 2007 to 2021 STI, Legacy GT, Forester XT and Impreza 2.5 GT years shown above.

About COBB Tuning

COBB Tuning was founded by Trey Cobb in 1999 in Rockwall, Texas, as a Subaru performance shop in the back of his father’s tire shop, and is now headquartered in Austin, Texas. In 2004 COBB introduced the Accessport, a handheld ECU tuning device that flashes COBB’s off-the-shelf maps or a custom tune and doubles as a real-time gauge and datalogger. The range has since grown from Subaru to Ford, Volkswagen, Audi, Porsche, Nissan, Honda, Mazda, Mitsubishi and Toyota platforms, with intakes, intercoolers, exhausts and flex fuel kits engineered alongside the tuning, and many COBB parts carry California Air Resources Board Executive Order numbers for use in all 50 states.

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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COBB Tuning Top Feed 1050x Fuel Injectors for Subaru WRX, STI, Legacy GT and Forester XT [312150]

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COBB Tuning Top Feed 1050x Fuel Injectors for Subaru WRX, STI, Legacy GT and Forester XT

Fueling and Tuning

Features

Specifications

Applications

Notes

Frequently Asked Questions

About COBB Tuning

Reviews