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Shown below are competitive mufflers versus DynoMax Ultra-Flo SS and Race Magnum Welded models. For Powertech Index cold-flow testing, the pressure drop across the muffler is held at 20.3" H2O and the flow rate (scfm) is recorded.
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MODEL |
Flow Rate |
Muffler Inlet Size |
| @ 20.3" H2O | ||
| + Edelbrock 5501 | 492 scfm | 2.25" |
| $ Flowmaster 42440 | 483 scfm | 2.25" |
| Race Magnum Welded 17216 | 711 scfm | 2.25" |
| + Edelbrock 5511 | 579 scfm | 2.50" |
| $ Flowmaster 42540 | 352 scfm | 2.50" |
| Ultra-Flo SS 17263 | 1133 scfm | 2.50" |
| Race Magnum Welded 17218 | 1000 scfm | 2.50" |
| # Borla 40600 | 836 scfm | 2.50" |
| + Edelbrock 5505 | 708 scfm | 3.00" |
| $ Flowmaster 43040 | 392 scfm | 3.00" |
| Ultra-Flo SS 17296 | 2200 scfm | 3.00" |
| Race Magnum Welded 17220 | 2200 scfm | 3.00" |
| # Borla 40450 | 1400 scfm | 3.00" |
| # Borla 40575 | 1100 scfm | 3.00" |
| @ Edelbrock 5535 | 562 scfm | 3.50" |
| $ Flowmaster 435409 | 576 scfm | 3.50" |
| Ultra-Flo SS 17268 | 2200 scfm | 3.50" |
| Race Magnum Welded 17224 | 2200 scfm | 3.50" |
| # Borla 40615 | 854 scfm | 3.50" |
| @ Edelbrock 5537 | 1400 scfm | 4.00" |
| * Flowmaster 54040-10 | 634 scfm | 4.00" |
| Race Magnum Welded 17225 | 2600 scfm | 4.00" |
| # Borla 40741 | 1450 scfm | 4.00" |
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+ Edelbrock General Application Series |
| @ Edelbrock Victor Series Race |
| $ Flowmaster 40 Series ( 2 Chamber) |
| * Flowmaster Delta Force Race Series |
| # Borla XR-1 Racing Series (Round or Oval) |
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| Vehicle
Equipped with DynoMax Mufflers |
Vehicle
Equipped with Brand X Mufflers |
| Kinda Scary.....Isn't It? | |
