[alfa] Centre Muffler

[Tiberio Nick]

[alfa] Centre Muffler
 
Alfisti
This has been dicussed in the past somewhere in the digest but I cannot seem
to find the references.
I need to replace my loud exhaust system.
What makes the stock centre muffler quiet compared to after market types?
What type of construction/configuration is it?
Straight through, tri-flow, baffled, chambered? 
Thanks
Nick T
1980 Alfetta GTV 2000
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