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Old 09-24-2005, 09:51 PM   #1
skittles15
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Default 2001 2.5 Rs

Hello everybody,

I'm new to this site and new to owning a subaru. I recently picked up a 2001 Impreza 2.5 RS for 9000 and was wondering what kind of mods are feasable for about 1500 bucks to get her up to about 200 HP? Like i said i'm new to the subaru scene and don't know much about them so please, edumacate me.

Thanks

Chris
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Old 09-24-2005, 10:32 PM   #2
Iceman12321
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Three things that should give you some noticeable power. EL (Equal Length) Headers. Companies include Techworks and Cobb. Secondly, a catback. There are many companies out there in this category, but many go for the custom catback, since it can be made pretty cheaply. Lastly, Intake. Many have good reviews of their Cobb and Injen CAIs (Cold Air Intake.) This should give you a good start.
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Old 09-24-2005, 10:40 PM   #3
Lethargic1
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Quote:
Originally Posted by Iceman12321
Three things that should give you some noticeable power. EL (Equal Length) Headers. Companies include Techworks and Cobb. Secondly, a catback. There are many companies out there in this category, but many go for the custom catback, since it can be made pretty cheaply. Lastly, Intake. Many have good reviews of their Cobb and Injen CAIs (Cold Air Intake.) This should give you a good start.
These are all good suggestions, and they are the usual suggestions made by most scooby RS owners. Do a search on the subject man, trust me there is a plethora of information with people giving both true dyno and butt dyno findings on what they've done to their car to improve performance. Definitely though, Iceman has you on the right track for the amount of money you posted.
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Old 09-24-2005, 10:44 PM   #4
Iceman12321
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You also may want to check out RS25.com, which can be very helpful.
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Old 09-24-2005, 11:02 PM   #5
Sko
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Perfect Power ECU at www.rallitek.com, dyno proven 5-10whp with a stock setup I believe (there are plenty of MAPs for differant setups that will give more gains, just depends on all the mods), then the Weapon R 'Secret Weapon' Intake adds 4whp dyno proven, then get a full techworks exhaust www.techworkseng.com (order through rallitek they might have a better price), then a lightweight crank pully for another 3-4whp, and lets c...

Now from a conservative view after all that you would be adding roughly 20whp, and put your peak hp at around 190 or so. Not bad, but if you had triple your budjet you could quadruple the power with a turbo kit, staying N/A is somewhat expensive.

Good luck with your future mods.

Nick
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Old 09-24-2005, 11:28 PM   #6
skittles15
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Quote:
Originally Posted by Sko
Perfect Power ECU at dyno proven 5-10whp with a stock setup I believe (there are plenty of MAPs for differant setups that will give more gains, just depends on all the mods), then the Weapon R 'Secret Weapon' Intake adds 4whp dyno proven, then get a full techworks exhaust ] (order through rallitek they might have a better price), then a lightweight crank pully for another 3-4whp, and lets c...

Now from a conservative view after all that you would be adding roughly 20whp, and put your peak hp at around 190 or so. Not bad, but if you had triple your budjet you could quadruple the power with a turbo kit, staying N/A is somewhat expensive.

Good luck with your future mods.

Nick
I would love to see this here turbo kit. I may be quite interested...as for searching i did that first and had to sift through 100s of posts. (i've never been good at searching forums) I was just hoping somebody could tell me through their own knowledge, who knows right off hand.
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Old 09-25-2005, 02:42 AM   #7
poormansporsche
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Turbo kit bad! I have to strongly disagree when people say it's cheaper to go turbo than to stay N/A. It is by far much cheaper to go N/A than it is to go turbo. You just won't get the same kind of power If you're just looking for around 200 horsepower stay N/A. It's cheaper and less of a hassle.

Going turbo gets pricey when you add the turbo kit (4200.00 dollars for AVO kit) you'll get around 250 horsepower but you'll likely blow second gear on your tranny out. RS-T's are famous for that (RS-T = a turbo'd 2.5RS) and then you have the chance of leaning out gas on cylinder 3 becuase you got boost happy, so if that goes you have to pull the engine and rebuild the block. At which point you might as well buy a new engine or buy an STI block either way you're looking at 1500 bucks. Soooo thats my arguement for not buying a turbo kit (which don't belong in the N/A forum ) If you go turbo just swap a WRX engine in it's really designed for a turbo unlike our engines. A WRX swap will cost you about 5 grand or more. Then you have 227 horsepower so then buy more mods it doesn't end.

Conversly!
you could not pay over 5 thosand and get a full exhaust for 1200 bucks and a CAI for about 200, a light weight pulley for 80 bucks then get the I-Speed Reflash for 350 and if you feel the need get some cams for like 200 + 500 for installation and you'll definately be well over 200 horsepower. And your car will feel good. It won't have weird idle problems or require retuning. For the bargin low price of about 250 bucks. Plus you can buy a lot of it used and save even more. Except cams don't buy used cams.

my $.02 anyway

cheers

garrett
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Old 09-25-2005, 03:12 AM   #8
skittles15
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ok, thanks for the insight. i was looking into exhaust and Intakes (what do you reccomend brandwise?) As for boost happy...ran into my own problems with that, owned a dsm before this and blew up a 4g63 so wouldn't really have to worry about that. but yea, i'm excited for this here adventure

thanks guys
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Old 09-25-2005, 03:25 AM   #9
Caplin 2.5
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for 1500.... CAMS and the Perfect Power ECU should make great power around 200hp.

And if any money left maybe an intake or exhaust.
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Old 09-25-2005, 09:24 AM   #10
Iceman12321
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Intake - Cobb Tuning

Headers - TechWorks

Catback - Cobb Tuning, Borla, Stromung...Just to name a few.

EM - RalliTek

Cams - Delta

...This should give you a little cliffnotes version on some decent companies for each part. hope it helps.
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Old 09-25-2005, 10:51 AM   #11
shoeler25
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You are definetly gonna need some engine management and cams to reach that 200hp mark. A full make over on the exhaust will really only add like 15, so your still 20 shy. Iceman gave you a good list to research on his last post. Although Ill disagree with the cobb intake, only because they usually are expensive for what you get, Id recommend looking in the vendor forums to see, or private for sales. And my $.02 recommendation on catbacks is borla. I love mine, sound and performace wise, and it still has yet to rust after 2 years on the car. One last thing, your goal is prolly gonna cost you more than 1500, unless your able to find some good used stuff.
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Old 09-26-2005, 02:49 AM   #12
EcksJay
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Well.....I swapped in a 2001 2.5 into my '93. All I've done to it are the Delta Cam regrinds and pullies. I had it dyno'd and I'm getting 150 WHP and 158 WTQ. Not that shabby.
I've read that the parasitic loss from the drivetrain is about 18%. Do the math and that puts me right around 180 CHP. All for $200. Plus a torque curve that is out of this world. (for the money, that is) (search my name and you'll see my dyno sheet)
I know that if I go to a 2.25 or 2.5 exhaust, LW flywheel and an intake, I'll be at or above the 200 mark.
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Old 09-26-2005, 07:08 AM   #13
Jesse00
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ecks, actually, its about 25%... So you are doing 200chp. But i think he wants 200whp. So thats far way to go if he wants to keep it NA.
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Old 09-26-2005, 07:32 AM   #14
andrewanderson
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Quote:
Originally Posted by skittles15
Hello everybody,

I'm new to this site and new to owning a subaru. I recently picked up a 2001 Impreza 2.5 RS for 9000 and was wondering what kind of mods are feasable for about 1500 bucks to get her up to about 200 HP? Like i said i'm new to the subaru scene and don't know much about them so please, edumacate me.

Thanks

Chris
Welcome. a 2001 RS is going to be our next car. I love the body on that car. Enjoy.
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Old 09-26-2005, 08:14 AM   #15
Siper2
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ECU reflash for $350ish and 10hp or so: www.i-speedusa.com



I'm thinking of doing that, myself. Along with (maybe used, to save $$) TWE headers, and a new cat section. I already have a 2.25" Stromung midpipe and WRX axleback exhaust, but the axleback tapers to a smaller diameter near the can, and it's stock so it doesn't breathe well. It's just better than the 1.875" stock RS exhaust, and it was free.

So, full 2.25" exhaust and headers is what I want, plus the flash. That ought to make me happy.

=S2=
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