Increased horsepower, torque, and fuel economy

Developed from Flowmaster's line of Delta Force® race mufflers, Delta Flow® technology provides superior scavenging of exhaust gases even over a comparable (standard) Flowmaster muffler. This results in increased horsepower, torque and fuel economy, along with reductions in exterior sound levels and interior resonance. These three deflectors function properly only when they've been precisely placed and welded to exact specifications. Together they provide superior reductions in exterior sound levels as well as resonance transmitted through the exhaust system and into the vehicle. While most Flowmaster mufflers have relied upon a single deflector, recent advancements in production technology have allowed Flowmaster to construct mufflers with multiple deflectors.

By investing in state-of-the-art electronic sensing devices, Flowmaster can now produce mufflers with internal elements placed at tolerances of +/- .004'', twice the standard required by OEM car manufacturers. In fact, no one in the exhaust business today has tighter specifications. It is this exact placement of components within the muffler that makes Delta Flow® technology possible.

If you've ever played a musical instrument or watched a piano tuner at work, you understand how slight the differences are between being in-tune and being out-of-tune. That's exactly the case with Delta Flow® technology. Only sophisticated electronic sensing devices can place the deflectors with the accuracy required. Because without it, performance would suffer and you wouldn't get the famous ''Flowmaster sound.''

40 Series The original Flowmaster sound Powerful aggressive tone Noticeable interior resonance varies with RPM
Flowmaster Delta Flow 40 Series Mufflers
50 Series Mellow deep sound Quieter than 40 Series Mild interior resonance
Flowmaster Delta Flow 50 Series Mufflers