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Old 09-14-2020, 05:15 PM   #1
Swatsubie53094
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Default 2013 wrx NEED HELP with fuel pump injectors and lines

I am looking to upgrade my fuel pump with a dw65c. i am wanting to put new injectors bigger. i think the stock are 420cc so i was gonna try and go around 600 or 750cc i just am unsure if i need to replace the lines to support the bigger injectors or if the stock lines can support 600cc injectors or bigger.
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Old 09-15-2020, 08:41 AM   #2
Samurai Jack
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Your OEM lines are fine.
Your issue is a proper tune after install.
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Old 09-15-2020, 09:21 AM   #3
BlackFighter
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Stock lines can support 1050x injectors, you will be fine. And aren't the stock injectors 565cc? If they are, going to 600cc is pointless IMO.
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Old 09-15-2020, 10:18 AM   #4
Jedi03
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from my experience doing the rails helps with the fuel stumble...like they said they flow enough but its not much more for rails...doing rubber fuel lines will reduce cost compared to the PTFE ones
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Old 09-15-2020, 04:10 PM   #5
Swatsubie53094
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if i put them in do i need to tune right after or can i drive to get the tune? which would be about 25 miles to the shop.
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Old 09-15-2020, 04:12 PM   #6
Swatsubie53094
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okay cool thank you then i am going to go with the cobb 1050x injectors. but will the dw65c support them? or do i need to go with a bigger pump then that?
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Old 09-16-2020, 09:03 AM   #7
Samurai Jack
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The dw65c is more than enough for the 1050 injectors.

You can just install everything and then drive to your tuner BUT just drive it normally and don't drive it hard. The issue is now you are running much larger injectors which, until properly tuned, will dump much more fuel than your original set-up.

Dumping too much excessive fuel into the cylinders has the ability to wash the cylinder walls down with fuel. What that does is wash away the protective oil layer between the cylinder wall and the rings.

No oil = no lubrication = damaged rings / cylinders.
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Old 09-16-2020, 09:17 AM   #8
BlackFighter
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Buy the looks of it, you need to do more research before you start modding your car. Not being a dick just letting you know how this game works. This game is expansive and easy to install wrong or unnecessary parts.
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Old 09-25-2020, 12:59 AM   #9
BuiltWRXFL
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If you're gonna do injectors do 1050x minimum.

Spend the extra money and buy TGV deletes, rails, and fuel pressure regulator. ~$600 for all that. But when you're spending $800 on injectors and pump why not go all the way.
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