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Old 09-01-2005, 05:12 PM   #1
012.5RS
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Default Suggestions For Mods

I'm gonna be buying my brothers 01 2.5 RS 5 speed off of him. Its stock, he bought lowering springs(not sure what brand). I'm wondering what you guys would suggest for mods? I'm just looking to do the little stuff intake, and exhaust. for the exhaust i want something that will boost low end hp/tq more but i want something fairly quiet. I'm not a fan of the big 4" fart cannons. I was reading on here bout the borla header thing so ill stay away from that. I was looking at the AEM CAI they just came out with. If you could provide me with websites and or products and if possible dyno results. thanx in advance. I was also looking for wheels too in probably 17x7. If you got any suggestions for that also it would be great. the car is white and im looking for bronze/gold wheels.
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Old 09-01-2005, 05:29 PM   #2
shemoves
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Basics: Header, exhaust, CAI. For the exhaust, you could get a slightly used USDM STi catback for cheap...I am pretty sure that these bolt right up. If you mess with the search feature up top I am sure that you will find some articles about it. Also check in the NA forum.
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Old 09-01-2005, 05:30 PM   #3
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aem intake has much suck. cobb/injen intake are nice. borla header isnt bad...not sure what you meant by that. a GREAT catback is stromung. highly recommended around here. after your intake/exhaust you may look into a lightweight pulley. underdriven pulleys are considered bad, lots of people run them and are just fine. whatever you wanna do. high flow cats are a pretty good idea, if you wanna be a badass you can get a trackpipe, but prepare for a nice federal offense if you ever get caught.

your best bet for handlinlg is getting a nice set of tires and getting a larger rear sway bar (~20mm) then a nice spring and strut combo. prodrive and kyb strut is always a good option. you might want to look into brakes too. the whiteline anti lift kit makes an amazing difference also.

sites:

www.boxer4racing.com
www.rallitek.com
www.subaruwrxparts.com
www.renickmotorsports.com



just to list a few, there are tons more im just too lazy think about it.
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Old 09-02-2005, 07:36 AM   #4
012.5RS
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does anyone have an audio clip of a 2.5 with borla header stromung cat and borla cat back? Or a combination so i can hear what it will sound like? I'm also looking at a set of TWE Stage II Cams with some TWE Valve Springs. When I get my exhaust and intake done, would this be a good step? or is there more bolt ons i can do before going internal?

Last edited by 012.5RS; 09-02-2005 at 07:58 AM.
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Old 09-02-2005, 08:39 AM   #5
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it sounds like you want to keep this as cheap as possible, so:

pdm or ganzflow CAI
OEM WRX rear sway
Steering rack bushings
kartboy short shifter
mr josh lightweight pulley

^this list'll cost you about $450 total and your car will be way more fun to drive

for exhaust, get a hi-flow cat, 2.25" custom midpipe (resonated to keep it quiet for you), and a cheap magnaflow muffler

rims/tires: get a new set of rotas, or keep an eye on locals selling used tire/wheel combos and get something stronger and lighter with a bit of tire wear for the same price or cheaper.

if you want headers, save up for equal length...these pop up used pretty often, so you can get em for a good price.
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Old 09-02-2005, 09:34 AM   #6
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Greddy EVO2 exhaust is very quiet but a nice tone and helps out the torque curve. i'd suggest that.

steering and suspension mods will be way more fun for driving enjoyment. i suggest you browse that forum as well. a wrx rear bar is nice, but if you can get an aftermarket one i'd go for aftermarket.

and definitely think about the TWE cams...

they turn the car into a MONSTER!!!! it's like driving a whole different car.

however, they're hard to install unless you really know your way around the inside of an engine, and can cost well over 1500 once all is said and done if you have to pay for labor. they are sweet though.
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Old 09-02-2005, 10:11 AM   #7
012.5RS
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thnx for the info guys. butter you hit it on the head i wanna make the car more fun for cheap. I'm not looking at throwing a $3k turbo kit on(atleast not yet) this is actually my first impo car so im new to the brands and all but after all its still a car so it still has the same principles. For the cat any brand specifically you like butter? also where can i get a mid pipe with a resonator?

Last edited by 012.5RS; 09-02-2005 at 10:48 AM.
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Old 09-02-2005, 08:14 PM   #8
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Quote:
Originally Posted by 012.5RS
thnx for the info guys. butter you hit it on the head i wanna make the car more fun for cheap. I'm not looking at throwing a $3k turbo kit on(atleast not yet) this is actually my first impo car so im new to the brands and all but after all its still a car so it still has the same principles. For the cat any brand specifically you like butter? also where can i get a mid pipe with a resonator?
just go to any exhaust shop for the midpipe...check your local forum and see what shops they recommend.

I've heard the random tech cat is good, and there's even a generic one that you should be able to pick up for cheap from any decent exhaust shop).

I have a brullen hi-flow cat that came with my headers, but I dont think you can get them anymore (unless you find a used one).
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Old 09-02-2005, 08:27 PM   #9
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im ganna be a fool and say it WRX SWAP!!!!!
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Old 09-03-2005, 03:43 AM   #10
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You should definitely hear what a Borla header done right sounds like. It is pure sex.
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Old 09-03-2005, 07:09 AM   #11
012.5RS
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im probably gonna go with a borla header, dynomax OBDII Compliant Hi Flow Cat and a custom exhaust. what was the size of the original exhaust 2.25" if so any benefit jumping to 2.5" in such a small engine?
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Old 09-03-2005, 07:19 AM   #12
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original is 1.79" or something like that...2.25" is generally considered the best size for our engines
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Old 09-03-2005, 12:57 PM   #13
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2.25" seems to be the general concensus around here.
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Old 09-03-2005, 05:25 PM   #14
012.5RS
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jeez i didnt think it was that small... i was hoping to keep the stock muffler, or atleast get a stock looking muffler. Does anyone know if the pipe can be stretched that much? and if not a company that makes a muffler that looks almost stock?
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Old 09-03-2005, 08:44 PM   #15
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you guys are forgeting the most impressive mod- good clutch and lightweight flywheel i wouldnt recommend anything under 12lbs, did mine and its the best mod yet! you will love the quick revs and quicker accelaration(whatch that rev limiter)
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Old 09-04-2005, 12:31 AM   #16
012.5RS
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that will be when im done the exhaust/intake/suspension.
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Old 09-04-2005, 12:28 PM   #17
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What dynomax cat (part number please!) is OBD2 compliant? I was looking at the catalog and it looks like they only meet OBD1 standards? Definitely interested to know, cuz they are definitely cheaper than anything else out there.
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Old 09-04-2005, 09:44 PM   #18
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i cant seem to find it on dynomax's website anymore lemme keep looking i know i saw it somewhere. i got the part # written down at home for the OBDII cat in 2.25".
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Old 09-04-2005, 10:40 PM   #19
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Dude, if you want power, get a turbocharged Impreza. From my experience, it's not really worth dumping hundreds, possibly thousands on power mods on a 2.5. Either be reasonable about how much power you need (150 at the crank should Git R Done), or save up and buy a WRX.

I put a PDM intake tube ($100), Kool Blue filter ($38), and a lightweight pulley ($95) in my 2.5. Power increase is not really enough to notice. Only real difference is that the car sounds a little better because of the intake. Mileage seems to have gotten WORSE. Handles great with the sport tires and ProDrive springs, but if I feel a need to pass the blue hair driving the speed limit before the semi truck in the other lane creams me, I'll just wait.
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Old 09-04-2005, 10:51 PM   #20
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Quote:
Originally Posted by 012.5RS
i cant seem to find it on dynomax's website anymore lemme keep looking i know i saw it somewhere. i got the part # written down at home for the OBDII cat in 2.25".
The only two 14" body 2.25" high flows I'm seeing in Dynomax's catalog are 15182 and 15186, and I'm not clear what the differences are though it seems the second one is just a "high efficiency" model for hooking up to an air pump or something, which we don't have anyways.
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Old 09-06-2005, 07:37 AM   #21
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i found it it was magnaflow not dynomax sorry... I can afford a turbo'd impreza or the insurance for one. I'm not looking for low 12sec 1/4s I just want something thats a little more fun to drive. All im gonna do engine wise is intake, exhaust, lightweight pulley, and probably some TWE cams. From there its gonna be a little suspension work strut bars, rear sway bar, lowering springs, beefier cv shafts, bigger rotors and better pads.
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Old 09-07-2005, 12:03 AM   #22
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have any of you guys heard what a flowmaster 50 series sounds like on a 2.5 with 2.25" exhaust? I can get one from my work $80 and a small tip for like $15. I figure that would keep the exhaust on the cheaper side of things. I just hope it doesnt sound like total crap. I got a flowmaster 60 series axle back kit on my integra, it sounds ok when warm, but still too high pitch for my liking. I'm hoping the delta flow 50 series will sound beefier.
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