ALFAGTV6.COM

[Cassin]

Just a follow-up on my 8 April post regarding the new ANSA "Free-flow" system on my '86 GTV6:

As I reported, the new exhaust system produced a noticeable improvement in performance, and while the exhaust note was pleasant, it was considerably quieter than I had anticipated.

Now, however,after about two months of use, the ANSA system is considerably louder and with a much more impressive "note". Considerably improved on both accounts. A much more "serious" sound.

Any ideas on how/why the change in loudness and tone?

I don't know anything about the innards of the ANSA muffler, but back in the 50s & 60s we loved the "Hollywood" glass-pak mufflers which improved with age as the fiberglass inside deteriorated from the heat, and the sound got better and better (louder & louder!).

[MD]

I think you have answered your own question with a remotely possible tempering of the materials with heat but I wouldn't stake my nuts on the latter.