Fuel System Upgrade?

StrainTrain · Sep 22, 2017

Has anyone attempted a fuel system upgrade with the engine being direct injection? Looking to overhaul my Si but on other vehicles it was a simple task to upgrade the fuel pump, fuel pressure regulator and injectors. With this new direct injection engine I am having a hard time finding upgraded parts.

I am really new to upgrading my vehicles, but my buddy with an STI told me I would need a fuel system upgrade if I am going to install a CAI as well as an exhaust system. Any help is appreciated!

dc2turbo · Sep 22, 2017

you are not going to max the fuel system with the stock turbo. also i really doubt with any car you are going to max the factory fuel system with just a intake and exhaust

UHx0H · Sep 22, 2017

StrainTrain said:
Has anyone attempted a fuel system upgrade with the engine being direct injection? Looking to overhaul my Si but on other vehicles it was a simple task to upgrade the fuel pump, fuel pressure regulator and injectors. With this new direct injection engine I am having a hard time finding upgraded parts.

I am really new to upgrading my vehicles, but my buddy with an STI told me I would need a fuel system upgrade if I am going to install a CAI as well as an exhaust system. Any help is appreciated!

you don't have to upgrade your fuel system for CAI and exhaust. I haven't had any issues on my hatch with stock fuel system with Injen CAI, down/front pipes and running ktuner. I also met another civicx member with an SI this past weekend at SoCal meet running E85 with Injen IC on stock fuel system. He just had to get custom tune for E85

kshawn · Sep 23, 2017

You're good for like 350-400hp on the stock fuel system. There's another thread where Vit opens up the 1.5T pump and the 1.5T SI pump. I belive he did say that taking the 1.5T pump and combining a peace from the SI's pump would increasing fuel capacity.

Fuel System Upgrade?

StrainTrain

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dc2turbo

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UHx0H

Senior Member

kshawn

Senior Member

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