Resonator
 

I have an awful sound coming from my exhaust at low low speeds, and was told it was the resonator. Probably a stupid question, but what is this, how much is one, and can i just get it taken out without a huge change in exhaust loudness?
Thanks!

Re: Resonator
 

Get it cut out. Little change in loudness. Just make sure it's welded up correctly.

Re: Resonator
 

The resonator is similar to a muffler. Look under the car from just in front of the rear wheels. Follow the exhaust pipe forward from the muffler and the next big bulge is the resonator. Mine was removed and a piece of pipe welded in with very little change in sound, just a tiny bit raspier.
It's around $300.00 from Subaru but aftermarket will work.

Re: Resonator
 

I think I'll try just having it taken out. Thanks for the help!

Re: Resonator
 

The resonator is there for a reason. It is positioned at a nodal point in the exhaust stream. It affects the velocity at which the engine scavenges burnt gases, particularly at low revs.

If you replace it with a straight pipe your car will produce lower torque at low revs, and we all know the SVX prefers to change up gears quick and runs at low revs most of the time.

My advice is to replace it with a cheaper aftermarket resonator. The Subaru one is way too expensive, particularly as we know they all eventually rattle, so it is not exactly Rolls Royce build.

My 2c

Joe

Re: Resonator
 

I have the resonator delete and I can't really feel any lower torque than any other SVX I've ridden in.

Re: Resonator
 

If I replace it with an after-market one, any recommendations?

Re: Resonator
 

Jason, I did the straight pipe on my claret, and I never liked the sound of the exhaust afterwards. Blacky mentioned raspier, but mine had a blare that was hard to like.

The change in torque will be minimal and not easy to notice by seat of the pants. It will only have an effect at low [1500-2000 rpm] revs. Higher than this horsepower output increases and the lack of torque can't be noticed.

It's likely the reduction of low rpm torque will only show as higher consumption around town, not on the open road.

Jegs would be where I would look for a replacement.

Joe

Re: Resonator
 

I guess that's fair. My exhaust isn't perfect. It's a budget exhaust. If I had money, I would have replaced the resonator with another resonator, but since I was strapped for cash, the straight pipe stayed. It sounds a little different and I don't mind so much.

Re: Resonator
 

The Aero AR25 is a great resonator. It runs about $60.00.

AR25 resonator

Here is a photo of it installed in my 96 Polo



Verocious Motorsports also has a Magnaflow resonator 14416 It is a 4" round diameter, 14" long, (20" overall) for $67.00 or less
http://www.performancepeddler.com/de...D=MAG14416#img

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Re: Resonator
 

Hmm, maybe I'll look at replacing it if it's less than 100 bucks said and done. Is it 2 1/2" or 2"?

Re: Resonator
 

The AR25 resonator is 2.5" in and 2.5" out.

I also had AR20 resonators installed in place of the front cats for awhile. They were 2" in and 2" out (see photo) They work well for the 1992-1995 SVX, but my 96 with OBDII needed true cats up front, so I replaced them with Magnaflow cats very inexpensively.

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Re: Resonator
 

I've also heard of people using a Cherry Bomb type muffler as a resonator but I don't know how it would affect the sound, but they run ~$30 at most auto parts stores.

Re: Resonator
 

SVXCESS;

How did you handle the offset in the stock resonator? Did you replace the entire pipe run of the stock resonator? Or cut out the old and install new resonator in old pipe?
Thanks for sharing your experence!

Re: Resonator
 

If you want your car to be quiet and not have any part of the rev range boom or get stupidly loud, try two resonators of different lengths.