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Old 04-28-2004, 04:58 PM   #1
yeng
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Question kind of exhaust recommend for 2.2L?

I have 98 obs with 2.2L engine, what diameter of piping i should use for catback?

And I think there are not many catback system for 2.2L so i may just have to ended up customize mid-pipe and axle.....what brand of muffer you guys would recommend?

thanks!
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Old 04-28-2004, 05:02 PM   #2
Yoda
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Default Re: kind of exhaust recommend for 2.2L?

Quote:
Originally posted by yeng
I have 98 obs with 2.2L engine, what diameter of piping i should use for catback?

And I think there are not many catback system for 2.2L so i may just have to ended up customize mid-pipe and axle.....what brand of muffer you guys would recommend?

thanks!
Go with 2.25". This size, I've had good results with as well as others. As far as muffler, I have a Remus dual tip but SPD Tuning doesn't sell those anymore. I'm sure someone will fill you in on what type of muffler you should get. From reading, Stromung (sp?) is one that comes up a lot.
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Old 04-28-2004, 09:41 PM   #3
linsavy
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If you want to go cheap, a custom 2.25" mid pipe with a WRX muffler works just fine. It's slightly louder and a little more free flowing. Otherwise any of the mufflers that fit a GC8 will work.
The scooby sport probably sounds the best, but that is a subjective thing. Some people like window rattling loud, while other want subtle.
Powerwise, I doubt that there is much to be gained. A few hp realistically. Headers might be good for a few more, but there is no big win lurking out there.
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Old 04-28-2004, 11:47 PM   #4
akaG-reg
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I've got a WRX muffler on my 2.2 Legacy, it really sounds nice I think. As for actual power gains, well the butt dyno couldnít really tell. Iím not sure on headers for that 2.2, you might be compatible with the ones for the 2.5. There have been reports of whistling when using the WRX muffler on a NA car, but mine just sounds nice and suby-like. Iím not exactly sure on the size of the stock pipes, but they really arenít really restrictive. If you want to free up the exhaust look at the headers, a CAT, and the muffler. The stock diameter is probably pretty good. The 2.2NAís just donít need bigger than that, or they will loose velocity and that will result a loss in power. I could email a sound clip if youíre thinking about the WRX muffler, they go for 10-20 bucks on eBay.
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Old 04-29-2004, 07:56 AM   #5
JonofScio
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I'm sure that the gains provided by say, Cobb headers would be great for the track, but IMO, overall, from what I hear, on the streets, it's not going to make a huge difference. I say go with the entire Borla system. It'll be a big upgrade...
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Old 04-29-2004, 01:18 PM   #6
linsavy
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The 98 OBS will have single port headers most likely. The only headers are the Borla. It will definitely be louder, but no one is claiming big power. The cat is not good for much more power either, but costs a lot and is loud. The 2.2l is restricted at the head and cams. The stuff after doesn't get you a whole lot except sound and looks.
This is all hearsay and speculation though. I have never seen a dyno graph for a 2.2l with a bunch of mods.
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Old 04-29-2004, 02:55 PM   #7
1 Lucky Texan
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There seems to be an MRT header for the 2.2l single post head.
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Old 04-29-2004, 03:31 PM   #8
Nicklbrso
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2.25" intermediate pipe with some sort of muffler like a WRX as stated above is a fairly cheap cat back. Or you could go complete exhuast like i have with borla headers, 2.25" pipe, and a straight thru canister. All I can say is it is one mean sounding 1.8!
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Old 04-29-2004, 08:46 PM   #9
ImprezaVA
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I can vow that 2.25" with a free flow muffler will not yield you any butt-dyno HPs. I had this set-up with a dual tipped Magnaflow (M-14815) for awhile. After about 8 months or so I had the 2.25" replaced with 2.00" and had my stock muffler welded back on. Car runs better than ever. It just felt like I lost my low end torque, but this is what I felt, I didn't prove it on a dyno.

-Charles-
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Old 04-29-2004, 10:34 PM   #10
FuJi K
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I have custom 2.5" catback no res & straight through OBX universal muffler. Pulls great to about 5800 and starts to lose breath near 6k.
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