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Old 03-07-2018, 11:14 AM   #6
mr.nismo.
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Quote:
Originally Posted by TheRealSy90 View Post
So you want two catalytic converters, and two mufflers?

Yeah you're going to have tons of restriction dude.

Also idk how your previous setup was remotely loud, maybe California things lol.
Its 300 cells worth of catalytic converter yes, but both mufflers are straight through. However yes, California things for sure. It's nice when behind pulled over and an officer looks for a cat and mufflers and is satisfied.

Quote:
Originally Posted by afishysilvia View Post
I would think with a muffler and cat should be enough to silence the car down. I run my engine no cat with just a bullet muffler and dual out muffler 3" piping the whole way. Sounds quiet when I want and like a bat out of hell when Im on it.

Cali is great man...just gotta find ways around it.
The mil spec and vibrant res helped, but not enough. So far only the silencer did it. It's not terrible to me, but too loud for CA "standards".

Quote:
Originally Posted by RalliartRsX View Post
Add a bigger/different muffler, bump up the CAT size and keep the vibrant (its one of the quietest on the market)

If I am thinking right (cant find pics of the super medlian apart from cannon style mufflers), the main source of your sound is that Super medalian (if it is indeed a canister). Canister are just inherently loud with no sound absorbing properties what so ever.

If it is indeed a canister, ditch it immediately and go with a Noir, or Vibrant ultra quiet/stealth muffler
Well I'm stuck with the mil spec cat ( it's awesome, just want to fume down a bit more) but 300 cells is right where I want it, otherwise I'm close to an actual California compliant cat. The muffler is cannon style, but it's not a giant wide can or anything. I attached a pic of the actual catback. I wanted to go bigger muffler, but am restricted room wise under the chassis in the oem location (I measured around the area where it sits ).


Quote:
Originally Posted by tuzzio View Post
also, if I recall from previous research on my own, you want the mufflers as close to the end of the exhaust as possible, as the sound travels further it bounces around it gets louder.
Agreed, that's why I was wanting to stick a muffler in the oem location. I was hoping that as sound traveled through that v and the internal v in the muffler, it would bounce and abosrb sound while not resistricing flow.




As a side note, thank you everyone that has responded.

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