Fuel Injector Upgrade - The Definitive Answer?

[mspeedP5]

I've been looking, but I haven't been able to find the definitive answer...
My goal is to run an approx. maximum of 17 p.s.i.
I will be using the Microtech LT10S.

Is there a replacement injector that I can simply install with NO alterations for fitment and/or wiring that will allow sufficient fuel delivery for this goal?
And, will the OEM fuel pump keep up?

 

[low_psi]

What size turbo? HP goal?

 

[Jeph]

Depending on which injectors you choose you wil need new clips for the injectors, and possibly spacers or a new rail. The pump may or may not hold up, but for peace of mind i'd get a 255lph walbro. PM me i've got 550, and 750 injectors for sale along with a rail, pump, fuel pressure regulator, and fuel pressure gauge

 

[mspeedP5]

What size turbo? HP goal?

GT28RS

250whp

 

[low_psi]

WRX 440cc injectors will be fine at 250whp.

 

[mspeedP5]

WRX 440cc injectors will be fine at 250whp.

...with NO alterations for fitment and/or wiring?

 

[tekkie]

they will drop right in, but you will be to close to maxxing them out at 17psi imo

and at 17psi you should be making more than 250 hp, I hope your upgrading your rods

 

[Brian MP5T]

X2 on rod upgrade.

 

[mspeedP5]

Pauter and Arias .020 over are in.

 

[tekkie]

Pauter and Arias .020 over are in.

in that case you should be fine

 

[CWiLL]

with wrx injectors i went 12.4@116 which is around 340whp. they were maxed out but worked.

 

[mspeedP5]

Are the 440's that Protegegarage is selling the same ones? And why would they be more than the 550's???

 

[JBreed]

I smell swiss cheese...

 

[chaos2015]

Are the 440's that Protegegarage is selling the same ones? And why would they be more than the 550's???

the 440s are direct fit and the 550s require some mods to have them fit

 

[low_psi]

ProtegeGarage sells new WRX injectors. As chaos said, they are direct fit, pigtails match and everything. A higher flow fuel pump is not a bad idea when upgrading injectors to be used w/ a bigger turbo.

 

[mspeedP5]

ProtegeGarage sells new WRX injectors. As chaos said, they are direct fit, pigtails match and everything. A higher flow fuel pump is not a bad idea when upgrading injectors to be used w/ a bigger turbo.

Now all we need is for Ken to put together a special Spring package deal...

 

[mspHtown]

just out of curiousity, if you are only shooting for 250whp, why would u get a larger turbo? The stock one is more than capable of hitting 250whp.

 

[kyle's protege5]

I have a walbro 255 pump (pretty much a drop in) and wrx 440's (an absolute drop in)

I'm ran 16 psi and got 320 whp. You will run out of gas any higher than that.

Also best place to buy them is on a wrx forum. To them the stock stuff is junk, just like our stock stuff is to us. So lucky for us, their "junk" is our upgrade!

Got mine for like $90 shipped.

Just thought of something else, i believe their is a mod on the wrx forum to make 440's into 720's. I'll post what i find as i am in the need of larger injectors to reach my 20 psi goal.

 

[mspeedP5]

just out of curiousity, if you are only shooting for 250whp, why would u get a larger turbo? The stock one is more than capable of hitting 250whp.

I didn't have a stock turbo and I'm not getting a larger one... ?

 

[mspeedP5]

I have a walbro 255 pump (pretty much a drop in) and wrx 440's (an absolute drop in)

I'm ran 16 psi and got 320 whp. You will run out of gas any higher than that.

Also best place to buy them is on a wrx forum. To them the stock stuff is junk, just like our stock stuff is to us. So lucky for us, their "junk" is our upgrade!

Got mine for like $90 shipped.

Just thought of something else, i believe their is a mod on the wrx forum to make 440's into 720's. I'll post what i find as i am in the need of larger injectors to reach my 20 psi goal.

I'm watching the Subie forum.