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Old 04-15-2002, 02:39 AM   #1
hobun2
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Join Date: Mar 2002
Location: Montreal, Canada
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Dark blue

Default Exhaust mods

Has anyone installed a straight-through 2" exhaust pipe (from the headers) without the resonator? I'm thinking of also installing a universal Fireball muffler with that.

BTW: my car is a '93 Impreza L, 1.8l FWD. Any comments are suggestions are appreciated!
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Old 04-16-2002, 10:43 AM   #2
tonytiger
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I have planned the same. There shouldn't be any big problems and I believe the 2 incher would be a right size. Check it out from some tuning book or search here. The cat reduces air flow and at our case it creates a bunch of back pressure so you might want to even a bit larger pipe - maybe The gas is at it's almost largest volume at the cat since it's still hot there.

Some straight through designed muffler will do the trick.

However the cat is a one big air flow restrictor at our cars. Especially since we have so old cars. The cats gets tuftier and tuftier as it's been used. Here where I live the cats cost a fortune, but I believe you could find at your where about one for a cheap price.
As you described a straight through from the headers would be great, but I believe you will get at least the CE light, not sure.

The noise might increase a frigging lot though.

If you have a opportunity to go under your car check the connections which has to been made to the cat and if the pipe needs to bended in anyhow. The muffler shouldn't be an issue.

Good luck! Post if you get something done.



tony
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Old 04-17-2002, 05:45 AM   #3
hobun2
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Hehehe... I just got a price for my Fireball and the straight through exhaust: 500$ CAD ~ 312.50$ USD!

However, you are right. There is a O2 sensor in the cat and that might cause some problem...

I've made some searches on the site and I can't find anything concrete regarding the resonator's removal and its pros/cons.

I guess I'm gonna try it anyways and keep the original piping is something goes wrong...

Thanks Tonytiger! You've been very helpful!
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Old 04-17-2002, 01:38 PM   #4
spiralsmurf
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the resonator provides for a deeper sound and usually cuts the noise and flow significantly. you can buy high flow ones though.
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Old 04-18-2002, 06:15 AM   #5
hobun2
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Spiralsmurf

- is it wise to just replace the resonator with a straight pipe? Would that cause any drop in back-pressure or would the back-pressure still be high enough and increase the HP (while losing marginal TQ)?
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Old 04-18-2002, 10:57 PM   #6
tensecimpreza
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Read this article, it's pretty good. It's from SCC. I found a link from magnaflow's website (cuz they mention magnaflow products). Unless I were to find a Greddy or other ready-made one real cheap, I think when I do get an exhaust, I'll go to one of the better muffler shops and have them make me a magnaflow. I can select the muffler, resonator if I want one, tip, etc. It'll probably be cheaper than Greddy, Apex'i, Stromung, etc. and it might even flow better. I guess the 2.5'' would be the way to go. If anyone has done this, can you say how much you paid?

http://www.magnaflow.com/05magazine/05sportc.htm
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Old 04-19-2002, 05:05 AM   #7
Joe Alejandro
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Quote:
Originally posted by hobun2
Spiralsmurf

- is it wise to just replace the resonator with a straight pipe? Would that cause any drop in back-pressure or would the back-pressure still be high enough and increase the HP (while losing marginal TQ)?
Put a resonator because it WILL be loud. With that in mind, it'll cause turbulence and mess up the exhaust gas velocity, not to mention, horsepower loss. Joe
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