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Old 02-13-2006, 10:15 PM   #1
darkmist2k1
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Default turboing a RS...questions

hey everyone.. i have about a 1 or 1.5 year before i can swap out my engine.....so my friend persuaded me to slap on a turbo and have fun with it. so it got me thinking! I dont want to waste a lot of money on it! so maybe i want a simple stock wrx setup.. not too crazy!

i got couple of questions!

will a wrx header fit on a 00 RS engine(ej25)?
would it be efficent to run the td04 at 5 or 6 psi?
can i operate it with just an apexi SAFC to control the fuel?
do i need bigger load injectors?
What else is needed?

~Sunny
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Old 02-13-2006, 10:37 PM   #2
Jaxx
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bad friend bad

do you need this car for transportation a turbo kit will fail
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Old 02-14-2006, 12:02 AM   #3
darkmist2k1
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Quote:
Originally Posted by Jaxx
bad friend bad

do you need this car for transportation a turbo kit will fail
hahhaha...yea bad friend...and yea it a daily driver
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Old 02-14-2006, 12:04 AM   #4
powerlabs
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Wrong forum!

will a wrx header fit on a 00 RS engine(ej25)?

Exhaust header? Yes. The up pipe will hit the crossmember though, so the setup won't work.

would it be efficent to run the td04 at 5 or 6 psi?

Yes. Would it be efficient on a 2.5L engine? Not particularly.

can i operate it with just an apexi SAFC to control the fuel?

Only at very low boost levels.

do i need bigger load injectors?

Yes unless you are running very low boost.

What else is needed?

If you don't know, you shouldn't do this?
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Old 02-14-2006, 01:35 AM   #5
darkmist2k1
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Quote:
Originally Posted by powerlabs
Wrong forum!

will a wrx header fit on a 00 RS engine(ej25)?

Exhaust header? Yes. The up pipe will hit the crossmember though, so the setup won't work.

would it be efficent to run the td04 at 5 or 6 psi?

Yes. Would it be efficient on a 2.5L engine? Not particularly.

can i operate it with just an apexi SAFC to control the fuel?

Only at very low boost levels.

do i need bigger load injectors?

Yes unless you are running very low boost.

What else is needed?

If you don't know, you shouldn't do this?


nice! answer alot of my questions!! i though a putting wrx turbo into a RS is consider a swap! hehe..maybe not! ..thanx again powerlabs
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Old 02-14-2006, 02:19 PM   #6
Jaxx
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i would add that a safc will only work in a 98 or 99 rs not so well on a 00+
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Old 02-14-2006, 10:07 PM   #7
jayfressh
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Here's some advice to live by my friend "A blink is the same as a nod to a blind horse"
Do your homework there are alot of options, screen name Chadsuabru or something like that, sells a uppipe that will clear the cross member. as stated below STOCK wrx up pipe will not clear.
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Old 02-14-2006, 10:21 PM   #8
Charge
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Quote:
Originally Posted by jayfressh
Here's some advice to live by my friend "A blink is the same as a nod to a blind horse"
Do your homework there are alot of options, screen name Chadsuabru or something like that, sells a uppipe that will clear the cross member. as stated below STOCK wrx up pipe will not clear.
subachad is the name you're looking for. I know he had stopped making them for a while...not sure if he started up again.

Either way...do a search in Aftermarket Forced Induction. The forum's not that active(most people have veered away from attempting this as it's just not economically sensible or generally reliable), but there's tons(and I mean tons) of old information in there that's pertinent to what you're asking.

It's NOT as simple as slapping on some WRX parts. There's tons of minutea involved that most individual posts on turbo'ing an 2.5RS don't account for. Read about 15 of them and you'll probably cover most(but still not all) of the basics. Also, concentrate on ones that are of similar years as yours. There's lots of differences for the various years.
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Old 02-14-2006, 11:07 PM   #9
BensonRST
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ok, here's the list of words that don't belong in a TurboRS project; persuaded, slap on, simple, not too crazy. but moving on, it can be done, and can be reliable. In order to use any of the stock wrx exhaust piping, you have to swap in a turbo crossmember. the stock wrx uppipe doesn't hit the xmember, it hits the side of the head. you can have a machine shop make a 1 1/2" spacer to go between the uppipe and the manifold. just bring the gasket to the shop and say, make me one of these and it will work fine, it just pushes the rubo back slightly. the NA 2.5 intake manifold puts the throttle body further towards the firewall, and the wrx top mount is a tight squeeze. the 00rs ecu will learn around an SAFC from everything i've heard, so get some real EM. as far as why it wouldn't be effecient to run 5-6 psig on the 2.5, that's untrue. that's what i'm running and it is incredibly powerfull. My friend's stage 4 wrx can barely pull on me until about 80, then he starts walking away. bigger injectors are a god idea. i believe the stock 280's run out at about 4-5 psig. as far as being econimically insensible and unreliable, also not true. i did my whole turbo project for under $2000. i got alot of really good prices on some very good used parts. that's the trick. and there are also plenty of people still doing turbo projects on RS's, they just all go to RS25.com, not here, you'll find much more info there. but $2000-3000 for a mid to lox 13 second car is hardly expensive. with prpoer engine management, and a solid tune, 6-7 psi will last as long as you want. good luck.
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