Loudest Muffler
#2
reg FM-40s and Dynomax Ultra flows are loud.
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2000 F-150 XL,RC,LB,5.4,4R70W,3.55LS,
Class III tow/Payload #3/Convenience pkgs.,
4-wheel disc/ABS,Chestnut/Parchment 40/60,
Ford bedliner & gas/wheel/spare locks,
3" cold air box modification, Superchip,
Dynomax ultra-flow welded 3" cat-back,
3" exit Y-pipe, Hellwig rear anti-sway bar.
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2000 F-150 XL,RC,LB,5.4,4R70W,3.55LS,
Class III tow/Payload #3/Convenience pkgs.,
4-wheel disc/ABS,Chestnut/Parchment 40/60,
Ford bedliner & gas/wheel/spare locks,
3" cold air box modification, Superchip,
Dynomax ultra-flow welded 3" cat-back,
3" exit Y-pipe, Hellwig rear anti-sway bar.
#3
After hearing how the four cats would calm a Flowmaster, I installed a FM 40 series (without the Deltaflow). It is pretty loud. Just right for me, but too loud when my wife and baby are riding with me (and my wife was against getting them). I find myself turning the radio & air conditioning up and pulling the pacifier out of our baby's mouth to cover up the exhaust. I would go with the FM 40 again in a heartbeat. I haven't turned my radio on (when I'm the only one in the Screw) for a week.