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Old 06-27-2005, 01:33 AM   #1
whitey2815
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Default what first??

Hi! I own an '05 2.5 RS and am looking to make the car quicker... what order do you recommend I should do engine mods in.. also.. will all mods I do to the engine void my warranty??

Thanks in advance.
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Old 06-27-2005, 02:57 AM   #2
mamiyarz67
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i recommend this order
1. Get faster car
2. stop posting
seriously, a 05 rs isnt going to be That much faster, unless you sink Serious money into it and will only be "nearly" as fast as a wrx, if you wanted it fast shoulda gone that way when ya bought it. This isnt a civic club where an intake/exhaust will net you 30hp
We all ask this when we start, then we all realize it, some later than others its just not worth it for the NA
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Old 06-27-2005, 03:36 AM   #3
SLAKKER2282
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Well hello everyone to see this post. This is my first post on this forum. That means nothing to what you all have helped teach me. Thank you. This being my first post, I must say I aquired a beautiful 98 rs blue in color and fantastic in person.I love it, previously being a 240sx owner. So different, but the differences are amazing.
Nevertheless, the rexponse you gave this guy is horse****. So anyone who really loves the way this car looks, handles, and presence it commands, should do **** about allowing every ******* with a faster car beat the **** out of him in a stop light to stoplight race. Give me a break. My response is "Lets do it in the snow" Then well see. Till I can back it up on the asphalt, that is the reply I will give to every ******* driving a neon srt-4. This subaru is amazing in presence. What is wrong with this guy asking how to back it up with the ass to all 4 wheels to put the jerks to shame. . The only thing I have to say to the poster of this topic is if you have no idea how to add power to your car then you need to start your thread a little different.
Next time start your thread like this " This is my first car that is a badass with a litttle dick and I want to make it faster" Then well all know the dilemma you are in.
The normal routes will suffice:
Intake
Exhaust
Pulleys
Cams
Weight reduction
turbo
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Old 06-27-2005, 07:25 AM   #4
Siper2
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That was a pretty rotten first post, bud. Five blanked-out swears, not to mention the attitude.

mamiyarz's response might not have been what the guy was looking for, but you didn't exactly fight fire with water, there, did you?


Now, then...
No, the I/H/E route won't give you Honda-like results. Possibly because Subaru's already squeezed out most of the juice that a non-turbo EJ25 can give. However, I/E can still give maybe 5-10hp, headers maybe 10-15. It's about response, not horsepower gains, when you go that route. Forget about the numbers, and just pay attention to how the car behaves, and you won't be disappointed with these efforts.

If you want 200hp or a *little* bit more, you'll have to go full-bore with engine work. Only a small handful of people have N/A EJ25s that are over 200-210hp, and it took a LOT of effort for all of those cars. The fact remains that you can drop a used WRX engine into these cars for far less cash, since so many go up for sale, often for very little money. Doing the swap yourself of course saves sometimes ~50%, too. The wiring is the nightmare, at least from what I've seen so far.
(Although, the dashboards can be swapped, eliminating the need for (most??) wiring needs.)

For a few grand or less, if you do the work yourself, you can drop a WRX engine in the car and have 227hp instantly. Swap a 2.5" or 3.0" turboback in there, and you're probably at 240 or so.
Or a Forester XT or STi engine, but... those may be more involving. It depends on what you want.

Yes, do some searches. And as for your warranty? Honestly it depends on the dealership. Some have no problem with a sensible CAI and quiet exhaust, but some flip out if you swap RE92s for something else. See what kind of vibe you get from your dealership, I guess.

=S2=
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Old 06-27-2005, 11:12 AM   #5
whitey2815
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haha... thanks for all the advice guys.. yeah I know HOW to add power to my car... I just have never owned a subie before and therefore didnt know what parts would be most effective!

and i said in the first post.. i was looking to make it "quicker" not OMFG IT BEAT MY WREX!!!11

so for those of you who gave CONSTRUCTIVE advice.. thank you
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Old 06-27-2005, 12:44 PM   #6
wgb113
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Don't forget about handling as well. The stock setup can be improved upon greatly.

If you are about making more power and do, make sure to improve your STOPPING power as well.

Good luck and enjoy your car!

Bill
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Old 06-27-2005, 01:50 PM   #7
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i would say your best bet for some good gains without spending crazy money would be to do CAMS, a ganzflow style intake, EL headers and 2.25" exhaust. Spend the money on the headers and cams and get lower priced exhaust (custom) and intake (keep stock airbox, K&N filter and get rid of piping pre-box and put a direct pipe into your fender well to get cooler air).
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Old 06-27-2005, 02:31 PM   #8
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whitey2815-

First off welcome, secondly what do you want out of the car? A lot more muscle or just some more to make driving around town easier? For around town a new intake (Injen or Weapon R for an 05) and a (2.25") cat back would be helpful. You will gain power through out the entire band in both hp and trq. For some more muscle, a header (equal length = power, unequal = awesome sound) and a high flow cat. These two combined with the intake and catback will get you around ~15-20hp and ~20-25trq. For the real power you have to make it into the valvetrain heads. Our stock cams to say the least suck monkey balls, so a more aggressive cam is a nice mod, probably the best bang for buck besides the header. Next comes the porting and polishing of the heads and machining them. Expensive but worth it. There are a couple of "new" engine managements out there. Unichip has been around for a while, PerfectPower is a new one, and a reflash offered by some tuner in Canada. This is where most people stop or stopped a long time ago. So do what you will and its YOUR CAR so enjoy.
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Old 06-27-2005, 02:43 PM   #9
whitey2815
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hey thanks again for the advice! I just talked with my local Subie dealer and he said that a CAI and catback exhaust will not void the warranty, which was a big concern. So it looks like I will be ordering an Injen CAI for sure.. what exhaust is good.. I dont really care if it is expensive as long as it is fairly quiet (with wicked sound at WOT, of course).


THANKS!
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Old 06-27-2005, 02:54 PM   #10
cabe
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There was a clip on here a few weeks ago where a guy put a weapon r intake (crappy but whatever) and headers and exhaust on his rs and it sounded really sweet. Try to find it, I'm too lazy.
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Old 06-27-2005, 02:55 PM   #11
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Lightbulb some ideas...

Greedy make a fairly quite exhaust, sound awesome at WOT. Most american made exhaust(flowmaster, magnaflow, etc) tend to be louder than the japanese made systems.
If you do go the "custom" exhaust route, try and find a performance shop that does mandrel bending for the piping. Most exhaust shops use crush benders which reduce the internal diameter of the piping which reduces flow. Not by a whole bunch but ever bit helps of the EJ25. I would recomend 2.25" piping as I had a bad experence running 2.5" piping, made a noticable difference.
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Old 06-27-2005, 03:55 PM   #12
FriedIceCream
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Quote:
Originally Posted by mamiyarz67
its just not worth it for the NA
in your opinion it may not be worth it...all he asked for was help not negative ass comments, way to go numb nuts
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Old 06-27-2005, 04:42 PM   #13
shoeler25
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Dont worry about brakes, unless you jump up quite a bit in hp or plan on tracking the car. BBK only resist brake fade, they dont stop you that much quicker, its a topic thats been beat to death. But a little bit of engine and suspension work will give you the feeling your driving a much faster car. So Ill second whoever suggested headers(wait till the warrenty goes) catback, intake. Lose some weight, either with rims, pulley or flywheel. or just plain out lose weight in the car. and tighten up the suspension, rims and wheels will make s good difference and a rear swaybar to even the car out. Then do a bunch of reading and determine for yourself if you want to do struts and springs or coilsovers.
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Old 06-27-2005, 05:00 PM   #14
jut60
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from my experience, a bigger rear swaybar was more of an improvement for the car than an intake or exhaust. it'll make you quicker in the corners.
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Old 06-27-2005, 05:05 PM   #15
cabe
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^^^Word^^^
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Old 06-27-2005, 05:14 PM   #16
goNads
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just a bit of info... i was told by several exhust shops here in california that 95% of shops do crush bends. as i heard it, there are only 6-7 mandrel benders in the state.

the machine we all see in most shops is infact a standard crush bender... some shops will let you think it's a mendrel bender. frankly, i don't know if this is all true, but the info came from very respectable shops that have been in bussiness for many, many years.

that said, intake, exhust, pullys and cams are a good bet. you can get V8 sti springs, and a 20mm rear-sway for good suspension results... add end-links if you really push it through turns. steering rack bushings are good and cheap too.

are rs front brakes the same as wrx fronts? on my 2003 OBS they weren't. i went to the wrx fronts and wrx rears (drums on MY03-- you should have wrx sized rear discs) with stainless lines. recently i added, the "h6" rears. stopping is improved, while pedal feel is slightly diminished (in the first cm or some of pedal travel).

oh, you can also add a rear lsd... i don't think the rs has that yet.

Last edited by goNads; 06-27-2005 at 06:05 PM.
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Old 06-27-2005, 05:15 PM   #17
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in response to the RSB post...

it won't exactly make you that much quicker in the corners, it will just be easier to drive through the corners without having to fight understeer, and will add a marginal amount of grip to the inside tire. so it'll make you marginally quicker, but not that much quicker through the corners.

an RSB, and Tires, are the two best mods you can do to a stock RS IMO.

but a catback is a good mod too.

power isn't the RS's strongpoint, but if you like swapping or building engines, it's a great platform.

i love my RS because of handling.


in response to the mandrel/crush post-

crush bending isn't THAT much worse than mandrel, you probably won't be able to notice the difference. and for price, crush bent is significantly better.
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Old 06-27-2005, 08:10 PM   #18
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Cool.
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Old 06-28-2005, 10:36 AM   #19
whitey2815
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great! thanks guys


who makes a decent sway bar?? does cusco or prodrive?
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Old 06-28-2005, 11:43 AM   #20
Robin2
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whiteline, perrin, etc..... lots of choices.....

one great mod is also the nut behind the wheel.... take a driving school (or track school) and learn the car....

my 2 best mods were the rear sway bar/tires.... then springs/struts and then header/catback....
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Old 07-01-2005, 02:36 AM   #21
SLAKKER2282
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Hello everyone respondimg to this topic. I wanted to apologize to everyone for my response. I was the 3rd response to this topic and I wasnt right for me to sound like that. Like I said my last car was a Nissan 240sx and they aren't gods on the power either. They just handle like it. I got the same answers from people who thought they knew everything anout the car, then I started modding and proved them so wrong. I hate to see people discouraged right from the start. The guy was asking for help not confirmation that they made a great mistake in a car purchase and should trade it in.

I myself, amidst many not believers, have installed a underdrive pulley, without any negative effects, and a CAI. It feels much snappier. I own a 98 rs and the non-subaru owners will hardly race me because they are intimidated. They think I am a sti. Nevertheless I have a little more to back it up. Do what you can afford. It all helps. I belive cams are the best.

Thanks and sorry again to all!
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Old 07-01-2005, 02:46 AM   #22
svek
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Quote:
Originally Posted by whitey2815
great! thanks guys


who makes a decent sway bar?? does cusco or prodrive?
you can get a 20mm wrx sedan bar for very cheap.
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Old 07-01-2005, 02:57 AM   #23
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<--put the 20mm wrx rsb and 04 sti springs on my car and wow what a difference. i have a borla catback, with borla headers,grounding kit, and injen/weapon r intake coming. also wheels and tires since the re92 are a freakin joke. i still am questioning the grounding kit i have heard good and bad i guess ill try it and find out.
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Old 07-01-2005, 09:11 PM   #24
IMPREZA619
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suspension, brakes, wheels, tires.. re92's will kill you if you like to go fast.
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Old 07-01-2005, 09:12 PM   #25
IMPREZA619
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personally, i would buy some quality wheels and tires first.
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