I have 06 350Z 6speed manual with Nismo cat-back exhaust system on it
I just want to make it lilttle louder than now (deeper tone)
anyone has an idea?

 

what are your mods?

 

all stock except Amsoil NANO drop in filter and NISMO Cat-Back Exhaust System

 

I would recommend ART pipes. One of my most favorite exhaust was the Nismo with unresonated test pipes. The sound was SEXXXX!!!. Deep cruising then high pitched and loud at WOT!

 

OH SEXXXX Sound!!! Thats what i want
I am a noob on tuning
is this a full name 'ART unresonated test pipe' ?
my questions are
1. how much does it cost?
2. what do you have to take off to put this 'ART unresonated test pipe' ? (replacing the stock cat?)

 

go to motordyneengineering.com If you really want to keep the Nismo and get the most sound/hp out of it look into there ART Pipes, XYZ pipe with resonator. Also maybe switch your intake out. Im not big on intakes but i know when i installed my popcharger my exhaust opened up a but

 

yep, test pipes, youtube it,
get a tune tho mister or youl be all over the place.

 

At least test pipes.
If you have money to throw around, HFC's will work instead.
There are plenty of sound clips on Youtube.

Any aftermarket intake helps. Pop charger? Injen? Nismo?
Plenum spacer. Motordyne 5/16 is common.
Can't forget headers. Nismo. Stillen.

 

plenum spacers dont increase noise just hp

 

Plenum spacers most certainly changes the sound of the engine as well to varying degrees based on size to a similar extent as other intake mods do. That being said a spacer alone on a revup is useless unless it's combined with the earlier non revup collector

Test pipes + NISMO y pipe = your y pipe is going to break. Well documented issue with that Y pipe in long term use

Your best bet is going to a local meet and hearing various setups. How a car sounds at idle or free revving has nearly no relevance to how it sounds driving FYI

 

thats weird bc not only could i NOT tell a difference in my plenum spacer install but also Tony@MD also said you wont be able to hear a difference

 

 

 

high flow cats and motordyne xyz/w resonator will give a nice sound

 

Current set up aam test pipes + motordyne xyz pipe with resonator then rest of the nismo s-tune , sounds amazing imo , never heard someone not like it.
Heres a video , dont mind the sh!tty run lol http://m.youtube.com/#/watch?desktop...pOaAsof8&gl=US

 

link fail

 

Lol on cell phone

 

Youtube k6750gsxr and its video titled "vid00008"

 

Oops I mean "vid00006" lol 00008 is also me , the first car that flies by but I meant to post 00006

 

for now, i just wanna keep Nismo Cat-back exhaust system
(Mid-pipe, y-pipe, and muffler)

and thinking to get test-pipes/ high flow cats to swap the stock cats.
but kinda worrying about not to pass the vehicle inspection because of the test-pipe. and some test-pipe makes really raspy sounds which i am not prefer.