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Old 06-19-2001, 06:02 AM   #1
Scooby Newbie
Member#: 7442
Join Date: Jun 2001
Location: Walnut Creek, CA
98 Legacy Outback
dark violet

Question '98 Outback mods: Advice needed

hi guys!

I'm on my way to modify the subj.

It's not gonna be ultimate sports car - just more powerful and better handled. I read a lot of technical and commercial stuff,
but still did not make my mind - so I'd appreciate guru's advices

The first thing is power.
I realized there are two (three?) main things I can do:
1. modify air intake:

- K&N stock replacement
(simple, cheap, but not very efficiently);

- J-type (Weapon-R, JSsports)
(too loud(?), requires Apex'i S-AFC unit(?), high price, but much more efficiently).

So which one would you advise?
Can you state the value of hps/torque gain?

2. Exhaust system upgrade.

It's not such big deal in comparison with #1, IMHO.
Just suggest the brand

3. Any 'chip tuning'?
Did not get much about it...

Guys, I really need your help - I have to stop spend _all_
my working hours on how_to_make_my_subie_better stuff

O-o-o, btw, it's '98 Outback 5spd 64K and I love it!

Thanks in advance,

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Old 06-19-2001, 09:27 AM   #2
Scooby Specialist
Member#: 768
Join Date: Jan 2000
Chapter/Region: Tri-State
Location: nj
OB, volt, 911,
ram 1500, 1098s, m620


air filter:
1. k&n filter and pull the silencer in the fender - just a little more sound
2. new intake - less low end, more high end, noise, and $. better chance of blowing a maf, too.

chip tuning: don't think it'll do that much. not like in the audis or some other cars.

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Old 06-19-2001, 09:32 AM   #3
Scooby Specialist
Member#: 1519
Join Date: May 2000
Chapter/Region: MAIC
Location: Baltimore, hon!
1998 Volvo V70R


Well lessee.....

The problem with a J type intake is that you lose your torque chamber, the big black box that connects to your intake manifold. It is a reservoir of post-filter air the car needs for sudden low end throttle inputs. Furthermore, the J thingy sucks nice crispy-hot air from right next to the engine and, unlike the imprezas, we have no boy-racer hood vent to open up. The compromise is to remove your snorkus (AKA "Snorkusectomy"), a scary looking affair that lives in your fender well and attaches to the filter box. This will free up some airflow, especially if you drop in a K&N. It also takes cool air from the fender well at that point. Some folks shore up the hole inside the engine bay left by the snorkus; I find this too restricts airflow a little. I have left the stock intake (a little black scoop that lives behind your passenger side headlight) into the hole and shored it up with plastic and duct tape. Works for me. Others may disagree; YMMV.

Exhast sure does free up some power from what I hear, but I haven't done it yet. According to Rallispec (www.rallispec.com), it is the combo of freer intake+freer exhaust that is magic. I haven't gotten that far. You can try Stomung, although word is the mild stainless steel job rusts like crazy; step up to the full stainless. And smoeone here has a Brullen connection...GTGUY or GTBGUY, I can't remember. A competent speed shop should be able to set you up using a Borla or something, too.

forget about chips. The power of chips comes from the 80's when cars like BMWs were de-tuned for gas mileage. Modern cars don't benefit nearly so much from chippage....maybe 4hp?

Handling- If we open the Great Outback Handling Debate one more time, I'll go postal
Here are your options: a bigger rear swaybar. A strut tower brace front and rear. Polyuerythane (sp?) bushings. Better tires, and/or 16" rims. Mondo expensive coil-over suspension replacement. There is no performance strut/spring upgrade available for you car at this time other than a custom coil over.

So there you go...hope it helps!
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Old 06-20-2001, 03:48 PM   #4
Scooby Specialist
Member#: 2362
Join Date: Sep 2000
Location: South Carolina, USA
1999 Legacy Outback
Blue w/ Paint Chips & Mud



I have destructions up on how to remove the intake silencer snorkus thingamajig. Also have notes/pics on installing horns and lights and exhaust..... and will soon have pics of my corbeau forza seat I put in yesterday.

Now I just need to get the Anti Lift Kit, a bigger rear bar and some real tires!

But first I need to get a job.
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Old 06-20-2001, 05:57 PM   #5
Scooby Newbie
Member#: 7442
Join Date: Jun 2001
Location: Walnut Creek, CA
98 Legacy Outback
dark violet


Thank you for your replies, guys!

I decided to content myself with replacement stock air filter by K&N one and getting 17'' rims.

Looks like I have to wait for my next Subaru 99-00+ to make any serious mods.

BTW, anybody has super/turbocharger installed on the late 2.5 SOHS Legacy?

And what about KYBKBY GR2 Shocks (95-99)?
Did anybody use it?

Thanks again!
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Old 06-20-2001, 06:10 PM   #6
Scooby Specialist
Member#: 3198
Join Date: Dec 2000
Location: Portland, OR USA
2005 GT LTD Wagon
Garnet Red


The KYB's only work with a standard Legacy, unless you want to change tires/wheels, too, which will throw your guages all to hell.

There really isn't an aftermarket performance suspension available to the Outback, unless you want to spend $1800 for DMS golds.

The other mods you can do, though, besides those listed, is harder engine/tranny mounts, and the Whiteline ALK. They'll add quite a bit of cabin noise/vibration, though, so install at your own risk .
gavin is offline   Reply With Quote

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