[Healeys] BJ8 Exhaust Systems - BJ8 or BJ7?

[coudesluijs at chello.nl (Oudesluys)]

Derek,
If you take a SS exhaust and a mild steel one of the same design!!, the 
SS exhaust has a deeper exhaust note. Mild steel sounds harsher. Has to 
do with the material damping/frequency properties. This is particular so 
with reflection exhausts. In straight through glass/SS-wool packs it 
will be less noticeable.
Kees Oudesluijs

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