Muffler vs muffler

[Hipster]

I'd rather see average #s as opposed to peak #s personally, that tells the real story.

Yeah, I hear that.

Yeah, that's another story. I've always thought a 3" single would flow about the same as dual 2-1/4" but, not as well as 2-1/2" just based on cross section. What I think I'm seeing is better scavenging from the "Y" pipe?

I'm comparing B and E. The systems with the straight thru mufflers. Most turbo style mufflers have a 2 or 2 1/4core even if they have a 2.5 or 3in inlet/outlet.

 

[OutlawDrifter]

I'm comparing B and E. The systems with the straight thru mufflers. Most turbo style mufflers have a 2 or 2 1/4core even if they have a 2.5 or 3in inlet/outlet.

Dynomax Super Turbos are one of the very few that offer 2.5" and 3" flow paths all the way through. I run two 2.5" units on my 454. Quiet and zero loss as compared to a dual 2.5 to 3" single straight through Magnaflow copy.

 

[Erik the Awful]

I put a Dynomax Super Turbo 2" dual inlet/outlet muffler on my RX-7 back in the day. You could see straight through that thing. I got pulled over for noise the day I got it back from the muffler shop. I ended up welding SuperTrapp tips on it. On the way to and from the autocross I ran with 4 baffle plates and misfired all the way. On track I just removed them.

 

[Hipster]

I put a Dynomax Super Turbo 2" dual inlet/outlet muffler on my RX-7 back in the day. You could see straight through that thing. I got pulled over for noise the day I got it back from the muffler shop. I ended up welding SuperTrapp tips on it. On the way to and from the autocross I ran with 4 baffle plates and misfired all the way. On track I just removed them.

yeah Supertraps. They didn't work for a lot of people.

 

[Erik the Awful]

I didn't have the full SuperTrapp mufflers, just the tips with the baffles. They worked great for taking the sting out of the rotary exhaust. Without the baffles in place the exhaust was painfully loud.

 

[618 Syndicate]

Bet that rotary had a real wide powerband with a straight thru muffler!
Not...

 

[Erik the Awful]

Don't want to hijack, but yes. It was a half-bridgeport with Weber 36DCDs. Below 3000 rpm I would stay out of the secondaries and it ran on the center street ports. Above 3000 rpm I could open the back barrels to the outer bridge ports and it would scream all the way to 10,000 rpm (redline was 9,000). It sounded like an F1 car.