Found a solution to the P0193 CEL

[norcalpb]

Originally Posted by FrickingReallySlow

Can pre-facelift FRS use a 2017-2020 HPFP? is it hard to replace to get rid of the chirp sounds

Yes the updated fuel pump can be used on the 2013-2020 cars.

Honestly, even though I was dreading the install, it wasn't that bad. Once you remove the intake manifold everything is right there in front of you.

I personally replaced the gasket(s) on the banjo bolt and the hard line itself going from the fuel pump to the direct injectors.

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Part of my online order from "Devil Subaru Parts":

FUEL PUMP - 16625JB022 - $527.10 (The shop that diagnosed my car wanted $1,200 for the pre-revision pump, lmao)

INTAKE MANIFOLD GASKETS(S) - 14035AA610 - $15.33 x 2 = $30.66

THROTTLE BODY GASKET - 16175AA420 - $10.01 (You can leave the throttle body on the manifold if you drain your coolant)

FUEL PIPE GASKET - 17540AA340 - $3.91

HARDLINE - 17540AA340 - $37.56

Subaru fuel line disconnect tool for the quick disconnect line that connects to the intake manifold: $14

https://www.amazon.com/dp/B018SV6G5U...fed_asin_title

Lmk if you have any questions, very happy to help.

[norcalpb]

Some helpful tips:

Pull the fuse for the fuel pump and try to start the car to get fuel out of the lines. As a second precaution let the car sit for a couple hours so the fuel can depressurize by going back into the gas tank. The high-pressure lines see thousands of PSI which can slice off a finger no problem so be careful. Put shop rags underneath the lines you are disconnecting to catch the fuel that drips out. Don't overtighten the 17mm lines. Prime the fuel pump before starting the car to check for leaks.