Loudest Meanest Exhaust
Well, if you're looking for loudest... I've heard the Topspeed Pro-1 or RS*R Exmag GT2 exhausts are one of the loudest ones out there. Also, if you include some test pipes/hf cats, this will also effect the db level of your exhaust.
The RSR is pretty loud, along with the topspeed, also the tanabe racing exhaust and the new HKS hi-power Ti exhuast are fairly loud. The rsr is not a catback though, you can run with the stock y pipe or get an aftermarket one. I'm not positive what the tanabe is but i think its the same as the rsr. The HKS is a dual but more expensive. Like already said, with these exhausts and some other ones the additions of hf cats and headers will also increase/slightly change sound. I'd do a search for exhaust sound clips and you can check some out
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From: so cali 909-951-626
The JIC 350z is running their Titanium bullet single canister exhaust, without a resonator. That's pretty loud IMO, but I like it 
You can go with JIC exhaust, and remove the resonator, that's what I would recomend for a good sounding loud exhaust.

You can go with JIC exhaust, and remove the resonator, that's what I would recomend for a good sounding loud exhaust.
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my car is pretty damn loud... I thought it was loud when I had headers/resonated test pipes/GReddy EVO II exhaust... but when I swapped it out for headers/high-flow cats/Injen SES - I was blown away - it makes the other setup sound stock...
from what ive read in a lot of research before i chose which exhaust i was going with the Injen SES (ANGLED) combined with test pipes is outrageously loud. I heard the striaght tipped injen out right now isnt as loud, but you can get ahold of the angled in the private classifieds.
Personally i think my exhaust system may be louder than any system that is currently available on the market. I had test pipes on my car and my friends could hear my car from literally a mile away from their houses. Right now i have high flow cats and its a lot deeper. Its not too loud if you dont drive it loud but when you get on the throttle it rips and is definately way way way more than 95db.
Personally i think my exhaust system may be louder than any system that is currently available on the market. I had test pipes on my car and my friends could hear my car from literally a mile away from their houses. Right now i have high flow cats and its a lot deeper. Its not too loud if you dont drive it loud but when you get on the throttle it rips and is definately way way way more than 95db.



