MagnaFlow Exhaust Flowbench Test: Does a Quiet Muffler Impact Airflow Performance?

It seems logical that a larger, quieter muffler will have more of an airflow restriction than a smaller pass-through design. But as it turns out-that’s not always the case. And to prove it, we travelled to MagnaFlow headquarters to do some side-by-side flowbench muffler comparisons. Suffice it to say, the results may surprise you. So if you’ve ever wanted a quiet, free-flowing muffler without the noise of a traditional pass-through design, then you’ll definitely want to watch this one.
See all MagnaFlow products at Summit Racing
www.summitracing.com/redirect...

[@celloprof]

For a second, I thought the whole video was going to be in black and white.

[@magnaflowtv]

🔥

[@tptrsn]

That offset offset muffler lost way more flow capacity than I would have guess, this is some amazing information! Now if you could eventually get into some acoustics nerding with Rich. I need to be able to manipulate the tone better on my projects.

[@frankensteincreations4740]

Don’t get too hung up on mufflers tested on a flow bench… A lot of muffler start to shine due to the heat they create. Without the hot air from the engine they won’t perform as good… Although, I need to know where this flow bench is located. If there’s any one muffler that needs flow tested it’s the Flowmaster Pro Series Outlaw… It is literally blocked with a plug which causes the air to go around into the body, which is actually more area than the plug blocks. Also, the plug creates a major drag on the backside. Creating a massive scavenge effect on the airflow…

[@benzman-zj7qm]

Straight through is straight through, smaller can bigger voice, simple engineering really...