Quote:
Originally Posted by blumango
Thanks all for replying. Put my original mufflers back and it's punching strong again at the low end! However its much quieter now and I can hear some metal "zing" or buzz at high revs...think its from the HFCs?
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Could definitely be from your combination of exhaust and HFC.
The HFC do increase flow through the exhaust so the increased sound is expected.
-Mike