which is better for that nice rumble sound? Dynomax or Flowmaster? Thanks

 

flowmaster only because their around the corner from where i work and the owner car sounds real nice rumbling by our shop

 

hey joe826, if you want it loud, go with flowmaster 40 series. 50 series if you want it quiet especially with deltaflow. dynomax however is a bit mellow but also sounds good. I have flowmaster 50 series w/ deltaflow 3 chamber swept side and lovin it. my .02

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2000 Expedition 4.6 3.31 Rear
AIRAID Fipk with Poweraid Spacer
UltraFlow muffler
82 mm Mass Air Flow Sensor
6.8 inch TV with tuner/VCP
Full alarm and Auto-Start
Daytime Running Lights

New Addition:

2001 F150 Supercab 5.4L
3.55 LS
Airaid FIPK
82 mm MAF sensor billet aluminum
Soon-to-be Flowmaster exhaust
Full alarm and auto-start

EDIT:

50 series 3 chamber 3inch in/out Deltaflow Flowmaster
Swept Side style

COMING SOON:
2 inch rear drop, chip (maybe), wheels, pulley.

 

The Dynomax Super Turbos are mellow. The Ultra-Flows sound like a Z-28 on steroids. Compared to FM 40s; the decible level is close, but the sound is a bit different. The Ultra-Flows are only for those that like loud.

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2000 F-150 XL, RC, LB, 5.4L, 4R70W, 3.55LS,
Class III tow, Payload #3, & Convenience pkgs.,
4-wheel disc/ABS, Chestnut/Parchment 40/60,
Ford bedliner w/Paintsaver & gas/wheel/spare locks,
K&N F.I.P.K. w/Outwears pre-filter, Superchip,
Dynomax ultra-flow welded 3" cat-back w/ 3" Y-pipe,
Hellwig front & rear anti-sway bars, Rancho RS 9000s,
Mobil 1, K&N oil filter.