Would the Stock, ECU would be able to take into acount diffrent compresion ratios?

[Weebitob]

Originally Posted by SVXtasy

You don’t need to put 1500$ in to a turbo. Spend 600-700$ on a 60-1 or 57 trim t3. No eBay turbo!! I got fleeced by a turbo got on eBay!!

Well, then I guess these would be good for the job, even though they may be a tiny bit pricey in your book. Then again I don't know that much about turbos, can you get ahold of some kind of tuner or metal shop to frabricate or modify a cheap one for you? This is actually something I'de like to know.

Please enlighten us SVXtasy!

[svxfiles]

Originally Posted by THAWA

Well if SR20DET injectors fit in the SVX fuel rail, then sidefed STi injectors will fit in the SVX fuel rail. You can get sidefed STi injectors for like 200-300 for 4.

Also note that Nismo injectors are rated at 43.5 psi of fuel pressure. So using them with the stock fpr, which is set to 36.3 psi, would make the 555cc/min injectors flow around 463cc/min.

An F.M.U. will fix that.

[svxsubaru1]

Originally Posted by THAWA

Well if SR20DET injectors fit in the SVX fuel rail, then sidefed STi injectors will fit in the SVX fuel rail. You can get sidefed STi injectors for like 200-300 for 4.

Also note that Nismo injectors are rated at 43.5 psi of fuel pressure. So using them with the stock fpr, which is set to 36.3 psi, would make the 555cc/min injectors flow around 463cc/min.

Dosent another subaru have FPR that is rated at 42psi, i think 2.5rs have them if i remeber right.

Anyway what PSi are the STi 550s rated at?

[svxsubaru1]

Originally Posted by Weebitob

Well, then I guess these would be good for the job, even though they may be a tiny bit pricey in your book. Then again I don't know that much about turbos, can you get ahold of some kind of tuner or metal shop to frabricate or modify a cheap one for you? This is actually something I'de like to know.

Please enlighten us SVXtasy!

Iam sure i could find a some turner or fab shop that has the expertise to modify a turbo.

[svxfiles]

Originally Posted by svxsubaru1

Dosent another subaru have FPR that is rated at 42psi, i think 2.5rs have them if i remeber right.

Anyway what PSi are the STi 550s rated at?

Yes, and as I recall they are set up for 43.5.

But with bigger injectors, you have to have the MAF re calibrated, or use an engine management system.

[svxsubaru1]

Originally Posted by svxfiles

Yes, and as I recall they are set up for 43.5.

But with bigger injectors, you have to have the MAF re calibrated, or use an engine management system.

Or else do the split maf trick .

Does anyone like any of these turbos, most seem very afordable. http://www.turbocalculator.com/sale-garrett.php

[svxfiles]

Originally Posted by svxsubaru1

Or else to the split maf trick .

http://www.turbocalculator.com/sale-garrett.php

But then you must go with the 555s.
And that requires a little more turbocharger intake plumbing.
Either way, it will be a hoot!

[SVXtasy]

What ever turbo you get make sure it has a warranty and that you install it and make sure it works before that warranty is up.

" can you get ahold of some kind of tuner or metal shop to frabricate or modify a cheap one for you?"

Why would you want to modify a turbo? I am confused by your question.

Originally Posted by svxfiles

Yes, and as I recall they are set up for 43.5.

But with bigger injectors, you have to have the MAF re calibrated, or use an engine management system.

Nope, 36.3 psi. So when you put sti injectors in (or any new gen subaru injectors for that matter), you're getting the flow they're rated for.

[svxsubaru1]

Are those turbos at th link i provided water cooled? Would you recomend a a oil colled turbo? What are the main advnatages and disatvantiges of a oil cooled turbo?

That depends. If you want simplicity, then an oil cooled turbo would be what to go for. I dunno what all the advantages and disadvanages of a water/oil vs oil turbo are, but I do know with a water cooled turbo you can turn the car off immediately and the turbo will cool down through the water, whereas with an oil only turbo you need to let the oil circulate through the turbo to cool it, so the car still has to be running to cool it down.

[SVXtasy]

All turbo’s are oil cooled. Some are both oil and water cooled. the ones that are both just have a water jacket over the oil. I like water cooled turbo’s I don’t think there any reasons not to go water cooled and on the SVX it is easy because you can re-rout the water form the throttle body to the turbo. And with all the space problems in the SVX having a non-water cooled turbo would make things a bit hot.

[svxsubaru1]

I aggre with wanting a water, and oil bassed turbo, but are the ones on that site only oil?

[svxfiles]

Originally Posted by THAWA

Nope, 36.3 psi. So when you put sti injectors in (or any new gen subaru injectors for that matter), you're getting the flow they're rated for.

I believe, the new gen, 2000 and up use aproximately 43.5 psi (it varies between stick shift, and automatic) fuel pressure regulators.
That is why I bought and installed one YEARS ago, as have several other members.
I have since switched to an adjustable fuel pressure regulator, usually set at 44 psi, (when normally aspirated).
I have run from 28 psi at idle to 80 psi under boost at 5500 rpm
Way too low, and way, way, way too high!


BTW, My findings are, that for a NA engine, right around 44 gives the best driveability.

Hmm, interesting. Why does it matter if it's a manual or an automatic? How much does it vary? Just to be clear, when I said new gen I meant anything based on the Legacy line.