does a turbo quiet down an exhaust?

[fiznat]

I put on my new Apexi N1 Duals today and DAMN they're loud! They look real nice and everything, but they're a little bit too loud for me with the NA KA.. I was wondering how much I can expect the turbo to actually quiet down the whole thing once I get the KA-T running.. should I still be hearing that LOUUUUD rumble at WOT?

[raging panda]

No, the turbo acts as its own muffler in a way, instead of the direct combustion being pushed out into the exhaust, it must first go through the turbo which quiets it down. Theres a guy running around here w/ a rb20 and you can't even hear his car a WOT, hes got N1.

[HolyShiznit]

I have the N1 Dual and it is a rumble but......I dunno I guess I just hang out with people that have much more heavily modded cars and theirs are MUCH louder. Also with a turbo it will depend on what you do with the wastegate (open/dumped) and emissions(cat). The turbo won't suddenly silence it and the guy with the RB20 is quiet because he probably has a cat and an internal wastegate.

[TrunkMonkey]

Also with a turbo it will depend on what you do with the wastegate (open/dumped) and emissions(cat). The turbo won't suddenly silence it and the guy with the RB20 is quiet because he probably has a cat and an internal wastegate.

the turbo itself will quite down the exhaust note. having/not having a cat isn't going to make a huge difference in sound, and your open wastegate shouldn't make any noise until it opens up. even then there's a difference in the sound of the wastegate dumping, and the actual sound of your exhaust.

-demetrius

[Structure240sx]

my car is pretty damn loud. its kinda hard to tell ir it got quieter tho after turbo since i my wastegate dumps atmosphereically i cant really hear anything else too much, jsut that wastegate scream. hell i can hear my car idle on the street thats a good 50' from my bedroom. at least i can tell when the turbo timer turns it off and if anyone tried to steal it i would hear it as soon as it started

[GEO]

Haha your wastegate is pretty loud.... HAIRDRYER

[fiznat]

well it probably also doesnt help that I still have a little leak between the stock 'downpipe' and the cat.. I tightened it as much as I could, but I can still hear it down there and I can still see some gas escaping (when it's cold out)... I'm thinking about either putting 2 gaskets in there or maybe some liquid gasket. Anyways the thing is still pretty damn loud.. I plan on havin my wastegate dump to the downpipe at some point, but like you guys said, thats a different sound.

I guess I'll get used to it.

[Structure240sx]

yea u will just other people wont. i do love the roar my car makes when getting on it.

[HIGHLIFE1]

me too, i like the way it rumbles and pops when i downshift and don't get on the gas.

J

[AceInhole]

eqaul length manifold + T25 + 3" downpipe + cat + greddy dd + two silencers wrapped in steel wool = quiet as stock

[SloS13]

I just got yet another new muffler. Dynomax super turbo or some crap. sounds great. I got a cutout installed so I can be quiet or loud at will