higher flow fuel pump

[mellow65]

wasn't sure where to ask about about fuel pumps so i will try here.

is there any after market fuel pumps that flow better then stock 1st gen legacys.

i have found some walbro pumps for a 2.5rs. has anyone ever fit one of those into a legacy.

[asc_up]

Yes. The Walbro 255 for a WRX/STi is a direct swap and flows better than the stock Legacy pump. Plus, it's brand new as opposed to 15+ years old.


Not trying to slap you with the "Search Stick," but search around next time you have a question. Many questions like these have been covered numerous times before.

[mellow65]

Yes. The Walbro 255 for a WRX/STi is a direct swap and flows better than the stock Legacy pump. Plus, it's brand new as opposed to 15+ years old.


Not trying to slap you with the "Search Stick," but search around next time you have a question. Many questions like these have been covered numerous times before.

i did do some searching but i never seem to find what i'm looking for. so go easy with the stick.

i was looking on the walbro site and they have the 255 OEM and the 255 HP. and both are $99. is there any reason not to get the high pressure one?

their site says there will be no down side to it. And I am trying to bump my fuel pressure up a little. so i guess i answered my own question.

thanks

[asc_up]

Yeah go with the High Flow.

[555BCTurbo]

And I am trying to bump my fuel pressure up a little. so i guess i answered my own question.

thanks

Your fuel pressure is dictated by the fuel pressure regulator...

[asc_up]

+1 to what Nick said.

The HF fuel pump is only there to replace your old pump with something new that can put out more pressure than the old one.

To up the fuel pressure you'll need a different fuel pressure regulator.

[mellow65]

Your fuel pressure is dictated by the fuel pressure regulator...

i know that, but i'm just trying to get to a good system together before upping pressure. i figured replacing a 18 year old fuel pump in the race car can't be a bad thing. so that was the point of asking.

[asc_up]

Good. You're on the right track!

[yazmo]

+1 to what Nick said.

The HF fuel pump is only there to replace your old pump with something new that can put out more pressure than the old one.

To up the fuel pressure you'll need a different fuel pressure regulator.

hey that woulb be good to know what kind of replacement i could use for the pressure regulator if i change for a wabro pump

[ciper]

If the walbro 255 pump is a direct swap for our cars, and a direct swap for the current WRX then why isn't a used stock WRX pump the preferred upgrade path? It would cost less and support the horsepower levels that most of us plan to achieve.

[yazmo]

If the walbro 255 pump is a direct swap for our cars, and a direct swap for the current WRX then why isn't a used stock WRX pump the preferred upgrade path? It would cost less and support the horsepower levels that most of us plan to achieve.

ciper i dont understand what your are saying by if the walbro 255 pump is a direct swap.??? it his or its not direct fit.
and for the regulator pressure what option do we have since someone mention that if we change for the high fuel flow we need to change this regulator for something better?

what are better which can we use as replacement?

[Legacy777]

+1 to what Nick said.

The HF fuel pump is only there to replace your old pump with something new that can put out more pressure than the old one.

To up the fuel pressure you'll need a different fuel pressure regulator.

This is incorrect. I'm not sure if you meant to say flow, but a high flow pump is meant to increase the flow of fuel, not necessarily pressure.

[Legacy777]

If the walbro 255 pump is a direct swap for our cars, and a direct swap for the current WRX then why isn't a used stock WRX pump the preferred upgrade path? It would cost less and support the horsepower levels that most of us plan to achieve.

Because the WRX pump actually flows less then the stock turbo legacy pump. I'd have to look at the manuals to get the exact numbers, but I have looked at it in the past.

[ciper]

Because the WRX pump actually flows less then the stock turbo legacy pump. I'd have to look at the manuals to get the exact numbers, but I have looked at it in the past.

I assumed we were talking about NA cars but good to know. Yet another area where the Legacy Turbo was overbuilt.

[asc_up]

+1 to what Nick said.

The HF fuel pump is only there to replace your old pump with something new that can put out more pressure than the old one.

To up the fuel pressure you'll need a different fuel pressure regulator.

This is incorrect. I'm not sure if you meant to say flow, but a high flow pump is meant to increase the flow of fuel, not necessarily pressure.

Yes that's what I meant.

[93Leg-c]

Because the WRX pump actually flows less then the stock turbo legacy pump. I'd have to look at the manuals to get the exact numbers, but I have looked at it in the past.

I assumed we were talking about NA cars but good to know. Yet another area where the Legacy Turbo was overbuilt.

So, how much of an upgrade would the wrx OEM stock fuel pump be over the Legacy NA stock fuel pump?