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COBB Tuning Top Feed 1050X Fuel Injectors

MODEL # COB312150

$540.00


  • Q: fuel pump  chewyWRX1 month ago

    Will a Walbro 255 pump support these injectors for around 350-400 whp?
  • Q: Injectors  Screenname2 months ago

    At what point should the stock injectors be replaced ? Stage 2? Stage 3 ?
    • 0 of 0 people found the following answer helpful

      A:  There is no specific stage on when the injectors need to be replaced. When upgrading your turbo is usually when it is highly advised to upgrade your fueling system.

      Michael N. @ RallySport Direct 17 days ago  
        
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  • Q: Fuel Pump  BSNOWLGT4 months ago

    Will a DeatschWerks 265 LPH work with these injectors?
  • Q: Fuel Rail  Ambrit19984 months ago

    I have a 2011 STI, do I have to purchase a fuel rail or will these injectors fit into the stock rails?
  • Q: Cobb 1050X   Anthonypenaa5 months ago

    What is the max you can push these to the wheel ?
  • Q: Fuel rail  cfarinato5 months ago

    i have a 2018 sti, will these fit onto the stock fuel rails? or will i have to buy aftermarket fuel rails aswell?
  • Q: Compatible kits  Eulises6 months ago

    Compatible top fuel rail kits for these injectors for a 17 Sti from @rallysportdirect?
  • Q: Stock injectors  Eulises6 months ago

    For a 17' Sti can I just buy the injectors only and have them tuned? Or do I have to buy other stuff with them such as rails etc..? Car currently has CAI and a catless dp with a tune.
  • Q: Fuel pump  Nestornlopez6 months ago

    Will this injectors work with the DeatschWerks DW65c Series Fuel Pump. And is the injectors plug in play with a 2012 wrx?
    • 0 of 2 people found the following answer helpful

      A:  You would need to get a top feed conversion kit and rails, as well as a tune. They are not plug and play.

      Devan M. @ RallySport Direct 6 months ago  
        
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  • Q: Tune  Jazz8 months ago

    My current tune is for a set of DW 750cc injectors, (and my engine is running super lean right now) if i were to get these would i need a new tune to run them?
  • Q: Compatibility?  DIY_GC812 months ago

    I am a little confused regarding compatibility after reading a couple of the other answered questions on here... I have a 2005 STI motor on which I will be running IAG top feed conversion rails -- will these injectors and connectors work for that application?
  • Q: Fuel rails  Cody1 year ago

    Can you run these injectors on the stock rails
  • Q: Fuel Lines  Cody1 year ago

    I'm planning on converting to E-85 with these, will i need to run larger fuel lines or will the stock 06 WRX fuel lines be sufficient to run that?
  • Q: Fitment & Tune  KrisCH1 year ago

    They are directly fit or need some spacers. And fuel pump DW65c or walbro 255 can be enough? Can go stage3 with cobb intake and full turbo back system?
    • 0 of 0 people found the following answer helpful

      A:  These are direct fitment for 2002+ Subaru WRX models and 2007+ Subaru STI models and no spacers are needed. Any fuel pump over 255LPH will support these injectors, both DW and Walbro are great! In regards to stage 3, without knowing your year and model we cannot say. So feel free contacting our Customer Service via Live Chat, or Phone and we can help you out!

      Brady R @ RallySport Direct 1 year ago  
        
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  • Q: Tune require?  William Cheung1 year ago

    Would a tune be require after installation? I currently have stage 2 + TMIC, 3EBC & AEM320lph.
    • 0 of 0 people found the following answer helpful

      A:  Yes these will require a professional tune.

      Tyler G.
        
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  • Q: Perrin fuel rails  Bigshorty1 year ago

    Are these compatible with the Perrin Fuel rails?
    • 0 of 0 people found the following answer helpful

      A:  These should fit with the Perrin fuel rails without a problem.

      Tyler G.
        
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  • Q: Installation   ajszurek258121 year ago

    Installed these on my 04 wrx . However when the fuel pump primes they spray fuel out of the top where they connect to the fuel rail. Any tricks to get them to seal better?
    • 0 of 0 people found the following answer helpful

      A:  If fuel is spraying out, you may have torn one of the o-rings on the injector itself. You will want to go through the install again and have them inspected. If you need help finding a replacement o-ring, please contact us and we will be happy to assist.

      Evan M. @ RallySport Direct 1 year ago  
        
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    • 0 of 0 people found the following answer helpful

      A:  Hi there, sorry to post this here but I can’t think of any other way to contact you. I just got done installing these onto my 2004 WRX as well as IAG fuel rails. My car is doing the exact same thing, they squirt fuel out the top when priming the fuel pump, did you ever get this fixed or figure out what the problem was? The seals on mine are all in good shape yet every single one of them leaks fuel. If you could I’d love any info. [email protected]

      rodgersmustang01768
        
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    • 0 of 0 people found the following answer helpful

      A:  Yes I did. I put a small dab of oil on the upper o ring. For lubrication Seated that into the fuel rail. The seated the bottom seal into the tgv. Then bolted the whole fuel rail down.

      ajszurek25812
        
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  • Q: Top Feed Rail questions  Steve2 years ago

    Since in one of the answers you said it doesn't work with the Injector Dynamics top feed rail conversion, does that also mean the ID 1050x fuel injectors also don't work with the ID top feed rails, since both cobb and id 1050x injectors are the same?
    • 0 of 0 people found the following answer helpful

      A:  I am unsure of which question you are referring to but these will work with the Injector Dynamic fuel rail kit.

      Tyler A. @ RallySport Direct 2 years ago  
        
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    • 0 of 0 people found the following answer helpful

      A:  I am unsure of which question you are referring to but these will work with the Injector Dynamic fuel rail kit.

      Tyler A. @ RallySport Direct 2 years ago  
        
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  • Q: Fuel rails required?  Ilya.fordruckle399572 years ago

    Just to confirm, top feed fuel rails are required to run these injectors right?
    • 0 of 0 people found the following answer helpful

      A:  These are top feed injectors and will work with the OEM Subaru top feed rails or any fuel rail keeping the injector size the same. These wont work with the Injector Dynamics top feed conversion rails or with the Subaru Side feed fuel rails.

      Evan M. @ RallySport Direct 2 years ago  
        
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  • Q: What tune is required   asalcedo1993495632 years ago

    What tune is required? I’m on AP stage 2. After installing these what tune would I have to be on?
    • 1 of 1 people found the following answer helpful

      A:  These will require a professional tune or protune. There is no Cobb MAP that will tune for injectors.

      Tyler A. @ RallySport Direct 2 years ago  
        
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  • Q: Tune required?  Nik2 years ago

    Can I run these with an OTS stage 1 map or do these need a protune to be run safely on my wrx?
    • 1 of 1 people found the following answer helpful

      A:  You would need a professional tune for these to run properly on your vehicle.

      Tyler G.
        
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  • Q: wrx limited 06   willians20201252082 years ago

    are this injectors good for my set up I got a fuel pump that can hold 500hp I got cobb intake cobb EXHAUST I will get vf39 I will put the front mount intercooler I will get the access port do you think I will be fine with this injectors knowing that is my daily driving
    • 0 of 0 people found the following answer helpful

      A:  The Cobb 1050x injectors will be large enough for use with a VF39 and will be a good choice.

      Evan M. @ RallySport Direct 2 years ago  
        
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