It made a huge difference. Remember, I am that guy that if its just 1 decibel louder than stock then its too loud. Those that run dual mufflers probably dont have both a 6” with a 7” diameter round muffler. They probably run smaller diameter mufflers or worse resonators. Also it depends on the muffler used as well. Some racing style mufflers dont have any fiber glass packing inside, but rather just some steel wool to keep weight down i guess. I’m not saying Magnaflow is the quietest, but its the brand I had.

My current exhaust setup is dual muffler and it is loud. I have the Buschur SD rear muffler and a magnaflow 4” center. I’m doing something different right now. I put a manual cutout but have it installed inline with the exhaust and not as a “cutout”. The cutout inner diameter wall is 3” but the round “throttle” plate is 2.5” diameter. When its closed, the exhaust will pass around the 1/4” gap around the circumference gap of the plate and cutout wall. Most of the sound waves should hit the plate and cancel out to bring down the noise significantly. Then I can open it for WOT pulls for maximum flow and close it back up for normal driving. I havent finished yet to start it up and see how quiet it gets but pretty soon ill be done. I calculated the annulus (area between two circles, 3” and 2.5") to be equal to the area of a 1” exhaust pipe. Which in my opinion is good enough flow for normal driving. Plus I can control the plate in cabin to be as open or closed as I want.

 

From the tone and quietness, I believe this is just the catback mated with stock catalytic and stock downpipe . With a test pipe it gets louder and deeper. But the problem with video and sound clips its hard to truly tell how loud or quiet something is unless they reference some other sound we are familiar with the loudness in the same video. Example have a stock evo rev next to a modified exhaust evo.

Also keep in mind, certain mods will change the sound or volume/dynamic . Such as Cams , exhaust manifold etc..

Tanabe Medallion

Another clip but I dont know if its just catback or other exhaust mods as well.

 

Idk what diameter they had but i remember they did used magnaflow muffler too and it just looks odd for me honestly lol looks like some backyard rigged exhaust system.

Hmm sounds like a interesting set up, but wouldn't it be 1/2" gap instead of 1/4? cause that does make a lot of difference since more air could pass through around the plate. i would like to see this set up when you're done.

 

Yea i searched these vids already but it doesnt do me justice. I was next to a fully stock evo 9 MR SE a couple weeks ago at meet and its crazy how it sounded like a prius on idle with the AC on i would love that but dont want to go back to stock lol

 

Here is my Cold and Warm start up. Same mods.
Stock 9 turbo
GSC S2 Cams // GSC Springs and Retainers
E85
Denso IKH24 Sparks
SpoolinUp COP Kit

Cold (3 min into startup)

Warm:

 

 

Seems to me thats the only choice i have left. ill keep the Tanabe in mind until i hear one in person and compare it to mine. Your goal is the same as mine right now also lol so ill be waiting for your new exhaust setup and see how it goes if i like it i might just copy it since i already know a couple fabricators that could hook me up.

 

The Tanabe is opposite of what you asked for. You didnt want to hurt performance and quiet down at the same time. The Tanabe is quiet only as a catback with a stock piping a head and tapers inside. So depending on what power level you are, the Tanabe's taper in the muffler can hurt flow/power.

I’ll probably make a video when im done in the near future.

 

So how quiet was this exhaust?
I'm looking the same thing for my car - but using a 5" front muffler (for clearance) and a 6" rear muffler. If it's not very quiet, then i'll use their large oval muffler in the rear and chop out the spare wheel well.
When I say "quiet" I just mean you can drive the thing long distance without needing earmuffs

 

 

Maybe consider English Racing Boost Activated Cut Out?
https://englishracing.net/collection...-evolution-8-9

 

 

wouldn't it be the same since i got a dump tube setup on my car? or am i missing something here

 

I swapped out from something I dont recall to the tanabe touring and been super happy with it. Its way quieter than what I had and I still make ~500whp.

I dont have a video outside of the car, but this is the go pro from the side window a few weeks ago. It really is substantially quieter than it use to be with much less drone noticed the few times it has seen highway (just to/from the track when not towed)

 

There is a Tanabe Medallion in mint condition here on Evom at the moment. I had it on my first Evo and loved how quiet it was. I currently have a Buschur DP, hi flow cat and their magnaflow exhaust(like pictured above) and it is still too loud for my tastes. I ended up buying a Fujitsubo which is also just as quiet. I plan to keep running a high flow cat for the immediate future. If it wasn't for the fact that I did not find the Fuji I would of totally picked this up.

https://www.evolutionm.net/forums/sa...aust-mint.html