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Old 08-29-2001, 10:16 PM   #1
thebusiness999
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Question Exhaust help please??

OK, I'm really interested in buying myself a Scoobysport system, but the fact that it is catless doesn't appeal to me. I want a system that will at least pass a visual test, so I figure I'd need a cat in the center section; that way, someone looking under the car would see it.

From what I understand Stromung (who also uses 2.5" piping) sells a centerpipe with a hi-flow cat. Would using the Scoobysport downpipe and rear section with a Stromung center pipe work? Both of these manufacturers mention that their systems bolt on to factory piping, so I assume they would bolt on to each other. Is this correct?

Would this work? If not, are there any other manufacturers whose exhaust systems use 2.5" piping & include a cat in their center section?

Thanks in advance,
Paul

BTW-I am aware of the fact that it's against the law to play with cats unless they're damaged or old...I'm not concerned with that right now...
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Old 08-30-2001, 11:04 AM   #2
nhluhr
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good questions. i'd like to know too. anybody?
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Old 08-30-2001, 11:12 AM   #3
wrxnate
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JaMa's system is a Stromung......it has 1 high flow cat in the down pipe (available through JaMa)...he has no CEL so far and the O2 bung had perfect placement......I have not seen the mid-pipe w/cat...but if it is like JaMa's, should be nice

Nate
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Old 08-30-2001, 11:22 AM   #4
JaMa
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Default Good Fit and Power

Yeah, --bump--- that - the Stromung system is very nice all the way around. There is a single *small* cat in the downpipe and the next pipe back (containing the O2 sensor) is catless and straight through. I have had this system a while now and no CEL.

Plus, I think it must weigh about 35lbs less than the stock pipes with the cats. Bonus!

JaMa
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Old 08-30-2001, 12:37 PM   #5
GTBGUY
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thebusiness999 - If you're interested in a 3" system with high flow 3" cat as well (turbo-back) you should consider the Brullen system There'll be a exhaust dyno shoot-out very very soon in Colorado
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Old 08-30-2001, 03:49 PM   #6
thebusiness999
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Aww man, I thought the Stromung had a cat in the center pipe. Does any manufacturer's 2.5" system use a cat in the center section?

GTBGUY -- The main reason I want the ScoobySport system is because of the documented power gains, rally car sound, and their great reputation in England. But I am pretty open-minded about these things...what can you tell me about the Brullen exhaust? Why would I want to pick that over any other 3" system?

Does anyone know when Rallispec's 3" system will be released? A review of the prototype was posted a while back, but I haven't heard anything else about it since then. That's one other system I am strongly considering (if they ever start selling it).
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Old 08-30-2001, 04:11 PM   #7
wrxnate
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Stromung does have one in a center pipe....JaMa just decided to have his in the downpipe

Nate
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Old 08-30-2001, 04:37 PM   #8
JaMa
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Default Comparison

There are lots of choices right now, but here are the ones I know of first hand:

1. Scoobysport - no cats, electronic CEL fix, 2.5 inch turbo back with HUGE bell downpipe. VERY loud from what I hear.
2. BPM GT/Twister systems - single cat in the midpipe, 3 inch pipe diameter, LOTS of CEL problems, questionable fit and installation ease. Nice sound.
3. MRT turbo back system - nice, not too much money, 3 inch pipe diameter, single cat in the midpipe and no CEL problems that I have heard of. Nice sound, but I dont personally like their muffler and tips - kinda corny.
4. Stromung downpipe-back - retains stock cat in the downpipe, 2.5 inches front to back, NICE sound, not too loud, nice tips,perfect factory fit.

There are lots of other choices, but these are the only ones I have seen first hand.

JaMa

Last edited by JaMa; 08-30-2001 at 04:42 PM.
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Old 08-30-2001, 04:56 PM   #9
GTBGUY
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thebusiness999 - no probs

Here's some info for you :

1) Full 3" all the way from the back of the turbo to the exhaust outlets.

2) Only two-piece downpipe out there that has an option of either having the cat on (cat is a 3" hi-flow unit), or take it out and put in the test-pipe.

3) Full T304 construction and all Mandrel bends

4) Tuned to your acoustic preference. As quiet as stock, or as loud as a Rally car. Tonnally, the Brullens are DEEP.

5) Choice of tip styles : Single or Dual.

6) Limited Lifetime Warranty.

7) Dyno results will be coming soon WRXThis has his Brullen Turbo-back en route, and will be participating in the WRX Exhaust Dyno Shoot-out. (The one that JaMa is organizing)
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Old 08-30-2001, 07:19 PM   #10
thebusiness999
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Thumbs up Thanks for all the insight, guys...

Wow, that Brullen seems like an option worth looking at.

It's also nice to know that Stromung does offer the centerpipe w/ a cat.

OK, well at this point, I now have 3 main choices I am considering:
1. ScoobySport w/ Stromung center section
2. Brullen
3. Rallispec (it really caught my attention when I read that post from a while ago)

From what I have read, these 3 seem to fit my needs the best (or have the potential to) concerning the sound, fit, and look. I guess I will now have to wait for the big dyno-test day to get an idea of how these exhausts measure up against each other (with the exception of the Rallispec, ofcourse).

Thanks again for all the help.

Paul
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Old 08-30-2001, 07:38 PM   #11
wrxnate
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we will also be using a video camera for "dyno day", so you should be able to hear the different tones via digital video.......

Nate
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Old 09-03-2001, 03:56 PM   #12
thebusiness999
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Pardon my bringing this issue up again, but there's one more question I forgot to adress.

I will have a Cusco front lower brace on my car by the time I've saved up enough for the exhaust. Will this interfere with any of the downpipes from the exhaust systems I'm considering? What I'm asking is will any of these aftermarket downpipes have trouble clearing the Cusco piece?

Thanks again,

Paul
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Old 09-03-2001, 04:31 PM   #13
GTBGUY
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thebusiness999 - One thing to look at is how close it is to your stock downpipe, if it's right next to it, there maybe a problem. (ie : pipe resting on part of the brace).
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