Engine/Power - non turbo (All non turbo Imprezas) Who needs a turbo when you have 2500cc? Cams, intakes, exhausts, etc. The 2.2L and 1.8L Subies are cool too.

Open Down Pipe?

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Old 07-04-2014, 05:06 PM
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Open Down Pipe?

Hello all. I come to you with a noob question.

Unfortunately I will be selling my 02 2.5rs in the next few weeks and this weekend I plan on jacking her up to rotate my tires. I thought as a "going out celebration" I would remove everything after the headers and let her breath and rumble clearly for a day or two before I just put everything back together.

Anyone have experience with basically an "open downpipe" on an bugeye rs?

Things I'm concerned about:

-Flames shooting out and literally burning my *** and melting the underside
-Issues with the 2nd o2 sensor since it will be removed
-Over all ecu problems(no back pressure/engine doesn't run well)

Any help will be appreciated,
Thanks!
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Old 07-07-2014, 09:09 AM
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It will be loud... repeat, loud. I swapped exhausts with a guy once and we gave the car a listen uncorked, just light revs in the driveway, and it's not subtle. Tractors, buses, and big rigs are far quieter.

That and the problems you mentioned.
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Old 07-07-2014, 12:12 PM
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Originally Posted by de_engineered
It will be loud... repeat, loud. I swapped exhausts with a guy once and we gave the car a listen uncorked, just light revs in the driveway, and it's not subtle. Tractors, buses, and big rigs are far quieter. That and the problems you mentioned.
The noise is not a problem. It will only be for a fun weekend. I just wanted to make sure I didnt make any permanent damage to the car.
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Old 07-07-2014, 12:16 PM
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Originally Posted by FrenchFruits
The noise is not a problem. It will only be for a fun weekend. I just wanted to make sure I didnt make any permanent damage to the car.
Can't speak to those problems personally, but I think you're in the right direction so far as worrying about potential problems. I personally wouldn't go for more than a few blocks with an open dump. YMMV as it were, of course.
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Old 07-07-2014, 12:21 PM
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Originally Posted by de_engineered
Can't speak to those problems personally, but I think you're in the right direction so far as worrying about potential problems. I personally wouldn't go for more than a few blocks with an open dump. YMMV as it were, of course.
Indeed. I think I might end up just removing everything after the second cat. Which is still resonator and muffler so I'll still get some loud results while having my engine still run OK.
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Old 07-07-2014, 12:23 PM
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Originally Posted by FrenchFruits
The noise is not a problem. It will only be for a fun weekend. I just wanted to make sure I didnt make any permanent damage to the car.
That depends on your neighbors.
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Old 07-07-2014, 12:28 PM
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Originally Posted by Brfatal
That depends on your neighbors.
You mean the Indian engineer who sings at 1am every night? His songs could use a little bass.
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Old 07-07-2014, 12:42 PM
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Originally Posted by de_engineered
It will be loud... repeat, loud. I swapped exhausts with a guy once and we gave the car a listen uncorked, just light revs in the driveway, and it's not subtle. Tractors, buses, and big rigs are far quieter.

That and the problems you mentioned.
Hahaha. well said.
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