Engine Masters - Dual vs Single Exhaust

[The Far Side]

"Again with the negative waves Moriarty!"
Lots of us run straight-through mufflers on the street (including me, who hates loud anymore). Most of which are quite subdued in their sound.
How many hundreds of thousands of Magnaflows, Gibsons, Dynomax Ultra-Flows, and even new glass-pack types do you think there are out there? Many...
And all are straight through.

When done right, they can be quieter than some turbos. If sized or designed wrong, sure they can be loud. But probably no louder than a 30-series Flowmaster that is not straight through.

Basically, straight through or not, it's still called a muffler for a good reason. And it's why there's a full chamber around the straight through section on some, and whatever perforation magic the new Cherry Bomb and other brands of modern "glass-packs" use to quiet things down.

Paul

DirtDonk..........love the movie quote. One of my all time favorite “least appreciated” movie quotes!!!!!!

 

[Crush]

Kelley's heroes....love love love that movie

 

[WheelHorse]

The difference is probably from the scavenging from a proper Y.

 

[Cooter_76]

The difference is probably from the scavenging from a proper Y.

They tested with a T and a Y for the 2-into-1. If I remember correctly, the Y did perform a bit better.

 

[omureebe]

For my street Bronco, or any street vehicle, I think space requirements are paramount. I'll drop my 351W in next winter and forget that I'm losing10HP with my shorty dual exhaust with quiet mufflers that fit well.