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Old 06-26-2001, 08:38 AM   #1
Scooby Newbie
Member#: 906
Join Date: Feb 2000
Location: Austin TX
Angry Buzzing..Re-visited

I know most of us are aware of all the buzzing which plagues SVX's, but I wanted to mention what I found last weekend..

I have remove-replaced..buzzing heat-shields a number of times, yet last weekend , I found that my new, and rather deafening new buzz had nothing at all to do with the darn shields, as it was coming from inside the center Cat?-Resonator?

Anyway, with the rest of the exaust looking like the day it rolled off the line, I beleive we will be straight-piping this piece , and I wondered if anyone has done it before?

Dual exaust from the center back , appears as if it would be much more complicated and costly because of the way the muffler is fitted, just too cramped to get 2 in there, at least I think ..

I also shy away from removing the heat shields closest to the Transmission pan because of the possibility of adding even more heat , to such a sensitive area.
Anyone done this?
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Old 06-26-2001, 01:14 PM   #2
Scooby Newbie
Member#: 2827
Join Date: Nov 2000
Location: Woodland, CA
2002 WRX wagon
Silver, baby, silver


Yeah, that center resonator is the source of a buzzing at certain rpms on the majority of SVXs. My muffler guy didn't believe me- when the car was on the rack he was tapping the whole exhaust with a rubber mallet trying to get it to rattle and it wouldn't. I finally convinced him to replace the factory resonator with a bullet type resonator, cost like 60 bucks I think. No more buzzing. Yeah, go for it, a straight pipe would work fine too, seeing how large that rear SVX box is.
I did remove those heat shields by the tranny too- they caused a rattle when it was cold out, which went away when the car warmed up. Made it sound like a clunker. The same muffler guy and my subie mechanic said it wouldn't cause any problems. None yet to report.

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Old 06-27-2001, 11:46 AM   #3
Scooby Newbie
Member#: 906
Join Date: Feb 2000
Location: Austin TX
Default Gone...

Had it done, straight piped! cost $53 with tax.. had the same trouble with muffler guys not beleiving that's where it was coming from.

: Sounds Better
: Doesnt buzz at all
: Feels a hair quicker..
All around great fix, thanks guys..
Flatfour is offline  

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