I once saw a chart that had decibel levels for different mufflers. They won't be the same for every car but the numbers they got were from different mufflers installed on the same car. The flowmaster 2 chamber were the loudest of them all. The dynomax might be something more like you are looking for. At WOT the dynomax were almost as loud as the 2-ch flows. But at idle they were considerably quieter. I think a handleful of people on here can agree with that.
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85 GT 4bbl roller cam
2 ch. Flowmasters, O/R H-pipe
Performer intake and carb
milodon water pump, FMS 9mm wires, aluminum driveshaft, king cobra clutch
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