Hi from chile and sorry for my bad english. I want to buy a quiet muffler for my B18B with 2.5" full exhaust, 404 cams, 2.5" header, etc, I am tired with my loud exhaust even with a 22" Magnaflow resonator.
The shipping cost to my country is very high then I´m found two cheap muffler with 2.5", a big Dynomax Superturbo (chambered) and the XL Magnaflow, somebody have this mufflers??? Wich are more quietest?

ive never used either of those but if ure looking for an awesome muffler get a Mugen twin loop. its one of the most expensive u can get but i know for a fact that is a quiet muffler.

you can also try the Apexi World Sport II. Thats a pretty quiet set up. And not all that expensive.

^x2 on the world sport

Megan Racing has some OEM looking exhaust. They stuff their exhaust so it has a lowering tone, but still has alot of performance in it. Look at them as an option.

^i'm yet to hear a quite megan racing exhaust. my buddy had the ws2 and got rid of it for a megan racing setup... loudest, raspiest shit ever

If you are looking for a cheap muffler you can try to look at carpartswholesale.com. I don't know about the shipping cost but I purchased one from them last month because of my irritating muffler.

Thanks, well, I put a big Dynomax 17748 Superturbo Mufler and the sound it´s Ok.