Exhaust System Options

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Marccus

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What performance exhaust systems (at back) are still available for the 1989 SHO?

Magnaflow? , Dynomax? _____??

I have a PP y-pipe.
 

NoSHOAllGo

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Dynomax is the only company that makes a Cat Back system for SHOs. IMO Dynomax is really quiet compared to other mufflers. A lot of people like Borla (discontinued parts for SHOs), Magnaflow(sound amazing), Flowmaster(my personal favorite) and Edelbrock RPMs. You dont have to get the Dynomax Kit just for the Cat Back if your getting other mufflers. You can go down to your local muffler shop and have a 2.5" tubing cat back installed with your choice of mufflers. This would also be a lot cheaper. ( instead of paying $280 for the Dynomax Kit than at least another $120 for different mufflers plus installation.)
 
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Marccus

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Thanks! :thumb:

I'll check out the info you provided. I have stock cat back still after 18 years! Time to replace. I wish I had purchased the Borla when they were available. :cry:
 

TYSHO

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Thanks! :thumb:

I'll check out the info you provided. I have stock cat back still after 18 years! Time to replace. I wish I had purchased the Borla when they were available. :cry:

Doug at FPS still has them listed on his website for more than double the price of the Dynomax catbacks. I'd contact him if you're seriously interested in buying one. Also remember that he didn't just mark up the price sky high because they're the last ones left [if he still has any], Borla had quite the asking price for them when they were available.
 

baySHO_510

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My 94 came with a SHOshop equal length y-pipe w/cats & a Dynomax cat-back... It is waaaay too quiet for a car with a modded exhaust. The Dynomax setup is cool though because it has mandrel bent piping instead of the crush piping or what ever local muffler shops offer.

I heard a 92 with 2.5" piping / Magnaflows & a catless y-pipe... needless to say waaaay louder & nicer than mine. I might swap my Dynomax mufflers for Magnaflows.
 
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