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Old 04-10-2003, 03:29 PM   #1
Aaron Hoag
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Question cobb stage 1

Is the cobb stage one really that effective on the 2.5 rs?
spd usa basically discusses how it isn't that important to make those mods on an rs because subaru has already maximized and tuned everything in terms of intake and exhaust all that it can be.

My real question: Is it worth the money for stage 1 or does it just make noise and therefore money would be better spent on handling anyways?

a-
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Old 04-10-2003, 04:03 PM   #2
DrBoy01
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Intake/Exhaust make a clear improvement and it's been dyno-proven, although there is more power to be had from other mods as well.
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Old 04-10-2003, 04:15 PM   #3
DanzBorin
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Cobb intake is the cat's meow, but the exhaust can be had cheaper... plus you can pick out which ever one you want...
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Old 04-10-2003, 06:08 PM   #4
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Yes,

Check Cobb's dyno: http://www.cobbtuning.com/impreza/im...rformance.html

I read that also and had some doubts until further research. I didn't see any recorded or posted info at SPD to verify their statement.

I'll be investing in the Stage 2 soon .
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Old 04-10-2003, 07:04 PM   #5
pdlindor
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If you look at that article, one of the last paragraphs contains the phrase "...as of July 1999...", and most of the "Early Impreza" section is copyright 1998, IIRC. Most of the engine data pre-dates the current revision of the EJ25, and definitely pre-dates COBB's wonderful intake (and other work) for the 00-04 NA Imprezas.

I think that when the spdusa article was written, it was certainly true. However, 3 years of NA tuning and research have happened since then. I have the utmost respect for both Mike Shields (spdusa) and the Cobb people.

I think you'll most definitely see a difference with COBB's Stage I package. Even more so if you add headers and/or cams. (Josh of Cobb recently stated in a thread on wrxforum.com that with their new Stage II package + their ECU reflash, when it becomes available, it would possible to expect 200hp at the crank without cams!)

Enjoy!
~Paul

Edit: fixed link

Last edited by pdlindor; 04-11-2003 at 12:40 AM.
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Old 04-10-2003, 08:04 PM   #6
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Quote:
Originally posted by pdlindor
(Josh of Cobb recently stated in a thread on wrxforums.com that with their new Stage II package + their ECU reflash, when it becomes available, it would possible to expect 200hp at the crank without cams!)
Now THAT is something I can look forward to. Do you have a link to that? I went to wrxforums.com and it seems pretty empty, I assume it's the wrong site.
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Old 04-10-2003, 08:06 PM   #7
Aaron Hoag
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awesome replies, thank you very much.

it is hard to find "real" world people who can tell you stuff that the companies are paid to tell you. These forums seem really great for learning how and what to use to tune.
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Old 04-10-2003, 10:38 PM   #8
aj's25rs
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i spoke to mike shields over a year ago and i asked him about intakes on my99 and my00. his view was that though tey make some more power they are still basically eye candy. he was at the scc dyno session with shiv when they dyned intakes and exhausts, so he knows they can make hp but only to a degree. i think they got 14hp from the intake and afc and only about 5hp from the exhaust. i think together they do help alittle. mike shields explained that the 14hp that the intake added only would drop like a tenth of a second. not a big drop at all. so i guess he figures that you could spend money elsewhere like on suspension and tires, where it would make a significant difference. just my two cents. oh by the way i have both the intake/exhaust and header on my car. it does make a difference but not like a turbo or juice.
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Old 04-11-2003, 12:39 AM   #9
pdlindor
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Quote:
Originally posted by Cabal
Now THAT is something I can look forward to. Do you have a link to that? I went to wrxforums.com and it seems pretty empty, I assume it's the wrong site.
Yep...wrong site...D'oh!

It's on cobb's message board. Here's the link:
http://www.wrxforum.com/cgi-bin/ulti...c;f=4;t=000527

"Bolt ons with ECU tuning may be able to break around 200 h.p. at the flywheel. My car came vary close to that with a Unichip, but the Access ECU works better."

IIRC, the "old" Stage 2 got somewhere around 190-192. With their new header design + the reprogrammed ECU, 200 doesn't seem out of the question.

~Paul
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Old 04-11-2003, 11:06 AM   #10
Pat L.I.
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I am just about at the cobb stage two level however i did everything in moderation.

none of these mods will make your car a beast but they all add up to give you better drivability and an improved power band.

with just the cobb intake i did notice an improvement in the way the car pulled to redline, and i did not notice any drop in low end torque. makes a great sound.

adding a scoobysport muffler with a custom 2.25 inch midpipe from the cat back, made the car feel even smoother and stronger as i approached 4,500-5,500.. makes and INCREADIBLE sound. Pulls harder in third and fourth gears than it used to.

adding in the Go Fast Bits lightweight and slightly underdriven pulleys definately helped with low end acceleration, and i was suprised to feel that they helped on the top end aswell.
i still need to replace the headers, and im sitting on the edge of my seat waiting for the cobb accessecu flash to become available for the 2.5 models.

overall my car drives way better than it ever did when it was stock. It has more torque, better throttle response, and it wants to keep pulling until readline. I have also added eibach springs, a cusco rear swaybar, cusco strut bars and am loving the way the car handles.
so i would say yes the cobb stage 1 package does work. And like others have said its not going to drop an insane amount of time of your 1/4 but the driveability of the car is increased greatly in my opinion.
Hope that helps
Pat
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Old 04-11-2003, 12:27 PM   #11
xfrickx
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Pat,
Do you ever go to the LI meets? I am very interested in checking out your car! I don't believe I have seen it before.

David
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Old 04-11-2003, 03:28 PM   #12
Pat L.I.
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i have only been to a couple meets i was working some crazy hours up until recently now im back on my regular 7-4 and im going to try to get to some more meets.
Pat
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