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Reply to "Fuel filter questions for 2009 Beck Speedster"

Having just gone down the EFI route, I have something to say here.

Subaru uses 5/16" or 8mm throughout. According to Jegs or Summit that size line supports up to 400 hp.

Anyway, the pre-pump fuel filter I used is a standard NAPA 3/8" in and out. So I used 3/8" line there, and my MSD pump is 3/8" in and 5/16" out. I used 3/8" BECAUSE the pump inlet is 3/8". At the out of the pump I used 5/16". I used a standard Subaru filter, the round one that they usually install in the engine compartment just before the fuel rail.

In the engine compartment I used AN-6, in the tunnel I used 5/16" Nickel-copper solid lines.

Check out my thread in Spyders/EFI conversion of my Spyder.

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