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Old 11-27-1999, 10:25 PM   #1
Scooby Specialist
Member#: 297
Join Date: Sep 1999
Location: Wa
Cool What is in my exhaust?

I just went to the local muffler shop today wanting to get a estimate for a cat back system. He showed me there are 4 things in my exhaust!!! There are 2 Cats, a resonator and something else (he couldn't tell me what it was). Does anybody know? He also said he couldn't replace the cats because even though my car is a 97, it only has 28,000 miles on it and it will void the warranty. Am I going to have the dealer do my cat back?
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Old 11-28-1999, 08:05 AM   #2
Patrick Olsen
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Join Date: Jul 1999
Chapter/Region: AKIC
Location: Where the Navy sends me...
1997 Legacy 2.5GT
1996 Impreza coupe


To do a cat-back system the cats aren't touched, so the muffler shop should be able to do it.
What model car do you have? My '99 2.5GT has what appears to be three cats, a resonator, and obviously the muffler itself. There is one cat immediately after the header, a flange, then a second cat, a flange, then the third cat (?) and the resonator on the same length of pipe, then another flange just before the rear end, and then the muffler after the rear end. So, if the muffler shop doesn't want to touch any cats, looks like they could only replace from that last flange back to the muffler. Maybe you could convince them the third cat (?) is actually another resonator (maybe a little extra cash could convince them?).
Good luck.

Patrick Olsen
'99 Legacy 2.5GT (WNTR-GT): removed intake silencer, K&N filter, 18mm SPD rear bar, 80/100W bulbs with heavy duty wiring, 205/55ZR-16 Yoko Nexus tires
Supercharged '89 Mustang GT convertible (SUMR-GT): 9# intercooled ATI supercharger, etc, etc...

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Old 11-28-1999, 12:22 PM   #3
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Join Date: Sep 1999
Location: Wa

I have a 97 GT. I wanted to remove the resontaor and all of the cats and put in 1 high flow cat but I don't know what the other thing is. I'm taking my car in monday to have the clutch looked at so I will ask them what it is then.
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Old 11-29-1999, 12:24 PM   #4
Subie Gal
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Join Date: Sep 1999
Chapter/Region: NWIC
Location: WA
1970 FF-1 & '70 Van
02 WRX/01 RS


I had one of my cats removed when i did mine....

(BTW guys, i have pics now, so email me if you want to see them.)

There was no problem, although it may void your warranty, i don't know. My situation is different.

I went to "Bucky's Muffler Brakes & Radiator" - they should be everywhere locally. They are pretty good, but you'll want to stick around and watch them perform the work, just to make sure. I never drop the car off and leave....that's just me.

let me know if i can help.

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Old 11-29-1999, 08:56 PM   #5
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So what you guys are telling me is NOT to remove any cats and just put a new muffler on? If so I will have them remove the resonator as well. I'll probably Get the Stromung. I hear it rusts though. Grrr, Having low miles is a double edge sword. Oh well, that will give me more money for the intake!
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Old 11-30-1999, 01:07 AM   #6
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Location: Everett, Wa. Snohomish CO.

Correct, you cannot replace the Cat unless it's damaged or if you have over 50,000 Miles on the car. the Cat back that is offered through SPD should be good I've heard nothing but good stuff from Remus and Strommberg?? (I don't feel like spell check). Jamie's...err. sorry..... I gave away your secret code name,I ment Sub-gal...anyway Sub-gal's sounds Great. almost as loud as mine...a little Exhaust envy.......GO to Smart service in Mount lake terrace and ask Mike there, but I think you have 2 cats a resonator and a muffler. since you car is under Warrenty I'd be carful about how radical you go (From the Exhaust manifolds back??) . and there is always the concern with back pressure, however with just a cat back that will not be a problem, only if you were going to rip more out that just whats after the 2nd cat. a good question may be who thinks their Cat back exhaust is the best and where did they get it and for how much..........lalalal.... later

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Old 11-30-1999, 03:14 AM   #7
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1986 Ford RS200 White


Have a word with Minnam all will be revealed

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Old 11-30-1999, 09:39 AM   #8
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Join Date: Nov 1999
93 Nissan 300ZTT
Black on Black


Ok, here goes:

On the Legacy it appears to be cat-cat-cat then tubular resonator. Removal of the resonator is OK!

Akiata: There will probably not be any dealer that will make an exhaust system for you. They will not want to go to a larger diameter pipe.

Miller: SPD does not offer any cat-back exhaust systems. The Stromung is simply a muffler and the rear-section, which connects to the first flange. Also, I do not think the stromung is stainless steel. The Remus is a good muffler, which can be had alot cheaper. It is only the muffler and must be welded on (very simple $30-$40). Remus is owned by CEC wheels and are not that expensive.

As for other options, you could have them fabricate your own creation. The Apex-i N-1 seems to be the muffler of choice. Have them remove the resonator and use 2 1/4" or 2 1/2" piping to the muffler. They should be able to weld a simple flange before the first cat. The Apex-i muffler runs about $200 and the piping shouldn't be more than $150. For them to put it on expect to pay about $75. Total cost =about $425. As much as the Stromung with a better sound and stainless steel durability.

On another note: If anyone is interested we have the Borla prototype piece for sale. Make an offer and it's your's. It is the muffler and rear section, bolts on in about 10 minutes. Sounds good and deep and was used for about 3 months. We are selling it because we will be removing all the cats, and utilizing one high flow cat with an Apex-i set-up. When new it cost around $400. If interested e-mail us with your offer.

Good luck guys, and don't worry what the dealer says!

TRi Tuning
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