S52 exhaust too loud

[Varinn]

Had a neighbor complain about the noise when I leave for work at 5am, and it really is a justified complaint. My car is loud. I'd rather not drive my Z4M through the winter so I'm going to need to fix this.

Currently I'm running a stock s52, modified one2 headers into mandrel bent downpipes and merged into a 2.5" single. No catalytic, small resonator, and a single/dual magnaflow. I am considering swapping the resonator for a cat, but it may not be enough improvement. Can anyone recommend an SS muffler I can drop in that's not as much a straight through as the magnaflow unit? I may need a cat anyways as I might have emissions testing soon.

[ravenlord89]

I have a Borla and a Magnaflow with 2.5" piping. Magnaflow 5x9 (I kinda forget) and the Borla is a 1:2 9x6ish. No cat. M20, flows through the stock manifolds into a collector, to the magnaflow and then into the borla. At RPM under 3000 it is pretty tame, still hear it, but it is reasonable. Above 3000 it roars like a proper exhaust should.

I can't say what it would sound like on an S52, but I imagine it would be a little tamer, judging from youtube videos. For reference I had a resonator like your setup in place of the other muffler, but I found that it was far too loud.

[Northern]

I am considering swapping the resonator for a cat

That probably won't make any difference. Replace the resonator with another muffler, or just add one inline with the resonator.

[Varinn]

I'm not sure if I have the ground clearance anywhere else for another muffler. Booked an appointment with the guys who built my system to see what they think about dropping in a second muffler in the resonator's location.

[Delta]

That resonator looks tiny! Think about a longer resonator and a cat too (especially I you have emissions coming up).

[mrjones26@hotmail.com]

"Syncro design works" makes a killer s52 swapped exhaust from the factory manifolds back. The exhaust will work with any m52/s52 or s50/m50 swap. Give them a call (770) 324-7972

[Varinn]

Too late, already had the exhaust shop replace the resonator with a single/single magnaflow oval muffler. Made quite a reasonable difference, I havent heard any more complaints from the neighbors

[RainRider]

Too late, already had the exhaust shop replace the resonator with a single/single magnaflow oval muffler. Made quite a reasonable difference, I havent heard any more complaints from the neighbors

Did that setup reduce the drone inside the car much?