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C900 Performance, Mods & Tuning Covers Tuning & Performance modifications for the Classic 900 (C900)

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  #1  
Old 24th July 2007
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I was just woundering what a good preformance muffler would be....

any suggestions?..

thanks

Zach
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  #2  
Old 25th July 2007
88-16Tconv 88-16Tconv is offline
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I'd like to hear some feedback on this too. I'm doing a 3in DP into 2.5in cat-back as soon as I finish my battery relocation. I want a nice business-sounding perf muffler. I know none of us want to sound like a civic..........more like a porche. Anyone using something they would recommend?
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  #3  
Old 25th July 2007
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if you have a silencer after the muffler....GET RID OF IT!!! and put the end of a turbo exhaust on it

right their you get a lower town that sounds much better and will turn some heads
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  #4  
Old 25th July 2007
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Quote:
Originally Posted by 88-16Tconv
I'd like to hear some feedback on this too. I'm doing a 3in DP into 2.5in cat-back as soon as I finish my battery relocation. I want a nice business-sounding perf muffler. I know none of us want to sound like a civic..........more like a porche. Anyone using something they would recommend?
I have a Skandix sport muffler and tail pipe installed. Sounds pretty nice w/o the resonating raspy sound.

Installs cat back system using the stock mid pipe.
https://ssl.kundenserver.de/www.skan...B=281003628=29
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  #5  
Old 25th July 2007
nnamssorxela nnamssorxela is offline
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mine broke right before muffler, that sure turned heads for a while. It would be one thing having a loud fast car, but mine was loud and slow so I "fixed" it by buying a little coupler adapter for the pipr to muffler. It's not completely tighened on there yet and I get a kind of growl to it. I suggest taking existing stuff off before you buy new stuff...at least that's what I do. But if you're loaded, go for it!!
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  #6  
Old 25th July 2007
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i ran into the same problem with the exhaust breaking right after the cat.....
sounded like a harley haha
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  #7  
Old 25th July 2007
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Magnaflow, the shorter the muffler the louder the sound.... I think im using 18" length, 3" inlet/outlet. Sounds awesome.
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  #8  
Old 25th July 2007
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er... what if you WANT the raspy, resonating sound? i personally like the sound with just a downpipe on it, but it's just a lil too loud at cruising speed
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  #9  
Old 25th July 2007
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Quote:
Originally Posted by DanF.
Magnaflow, the shorter the muffler the louder the sound.... I think im using 18" length, 3" inlet/outlet. Sounds awesome.
+1 magnaflow all the way. Straight-thru is perfect for a turbo car, I went with med. length (not too loud at all).
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  #10  
Old 25th July 2007
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I replaced the cat with a straight pipe,installed a stock muffler and then removed the rear resonator(muffler)replaced it with a straight pipe.Nice low throaty sound without being too loud.
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  #11  
Old 25th July 2007
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Quote:
Originally Posted by 88saab900s
if you have a silencer after the muffler....GET RID OF IT!!! and put the end of a turbo exhaust on it

right their you get a lower town that sounds much better and will turn some heads
I would have to second this advice. I just added a turbo exhaust from the cat back. It's definatly louder than the stock setup especailly in the lower RPM range but not intrusive. Also relatively inexpensive $129 @ eeuroparts.com for the original starla/walker system..Fits like a champ, easy to install, and sounds great!

My only concern about a homemade setup would be to little backpressure...N/A's suposidly need some back pressure or you run the risk of burning the exhaust valves..

Plus the Turbo system is adequate for 200+ hp. And the square flange tip makes you think you have a turbo!
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  #12  
Old 25th July 2007
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Quote:
Originally Posted by DanF.
Magnaflow, the shorter the muffler the louder the sound.... I think im using 18" length, 3" inlet/outlet. Sounds awesome.

what magnaflow muffler did you get? does it matter if the inlet and outlet are off centered?
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  #13  
Old 25th July 2007
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Really gorgeous stainless exhausts for c900's are made by Ferrita in Sweden. One of the Saab parts places in the UK (parts made by a moose-like creature - why does this system supress mentions of that business's name?) lists some of the Ferrita systems in their inventory.

Jetex (again in the UK) also makes exhaust systems for Saab's but I don't think they have anything in stainless for c900's.

I believe that MSS in the USA (run by Jack Lawrence I believe?) still products sports exhaust equipment for c900's and 99's as well, but I don't have any contact info for them. They don't have a website. I don't think they make anything in stainless though.

As for the Scandix site, I can register on it but in the country selection field, the only two choices are USA or Canada. 8-) I put the correct state and country details in the 'City' field. When I first order something from them I'll find out if it buggers up their shipping system by having conflicting delivery info. ;-)

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  #14  
Old 26th July 2007
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Muffler?We dont need no stinkin muffler.

I have a glasspack...
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  #15  
Old 26th July 2007
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Quote:
Originally Posted by GearHead
Muffler?We dont need no stinkin muffler.

I have a glasspack...
even better....but doesn't get to loud??
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  #16  
Old 26th July 2007
shaverjeff shaverjeff is offline
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I have a glasspack, no cat, and electral conduit pipe for an exhaust, system not too loud but it does pop/crackle a lot during downshifts. It was ment only to be a temporary fix but its held up so well I've forgotten about it. Its been over three years and no signs of rust yet...
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  #17  
Old 26th July 2007
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i plan on doing a cat delete also....i was thinking something like this...

connect the down pipe to the i-pipe and then their would be a gap between the i-pipe and muffler(near the rear of the car)....add a straight pipe their and it should be good
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  #18  
Old 19th August 2007
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Does anyone off the top of their head know what the exhaust size is on a 1988 900s? i think its 2.25

Just want to make sure before i go buy a muffler and have to get like 4 reducers to put it together....

thanks
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  #19  
Old 20th August 2007
shaverjeff shaverjeff is offline
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I just upgraded to 3" (still not cat) and a 40 series flowmaster. The sound is excellent while not too loud. Probobly a bit noisy on the expressway for the folks behind me though due to the ridiculous rpms of the 4speed.
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  #20  
Old 20th August 2007
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I'm currently 2.5" turbo-back straight pipe. It sounds wonderful, but is a bit loud.


I have a Cat & DynoMax "Thrush" Glasspack muffler that are going to be installed on it tomorrow before my trek out to SOC.

So anyone going to SOC will be able to hear my new exhaust
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