I have the pro-1 and i think its pretty damn loud. I don't even have cats, test pipes or anything.

 

Ditto........who does make it, how about a sound clip??

 

Pro-1's stuff is all knockoffs, ... quality seems good though. You can purchase Pro-1 stuff through 350zforums' online store.

The Pro-1 exhaust is the same style/design as the ＲＳ★Ｒ EXMAG GT II: http://www.rs-r.com/products/exhaust/gt2.php
The Invidia N1 style exhaust is also the same as the ＲＳ★Ｒ exhaust. Invidia was affiliated with RS-R a while back (http://www.rs-r.com/faq.php#6), but there's no longer a relation.

All of these are some of the loudest out there, ... save a straight pipe.

Pic of the ＲＳ★Ｒ EXMAG GT II:

 

What about power gains? I just bought the Injen SES... how does it compare to the rest ? what do u guys think? Should i be on the look out for any issues/problems?
thanks

 

I just sold my Injen SES. IMO - It's one of the loudest systems. The HP gains were around 8 rwhp on the Sports Z Magazine "Exhaust Shootout" last year. It's one of the best looking systems with a big sound difference from stock.

 

Is there ANY exhaust system out there that has the SAME sound as the stock exhaust but just much louder?

 

Try headers, high flow cats and an aftermarket Y pipe, and keep your oem muffler. Slightly louder at 3500 rpms with no droning.

 

Fujitsubo

 

it's not much louder by much though.

 

that is true, but if you slap on headers and some high flow cats/test pipes, it'll get there

 

well then lets get there

 

With the test pipe, anything is loud. I used to have HKS with header and testpipe; but I cant stand the smell of fumes and I put the stock cat back in.
I thinking about getting a high flow cat, because I miss those loud exhaust tone.

 

RS*R is the loudest.........and than Pro 1........i just sold mines today though.....was kind of getting annoying after almost a year.....but its DAMNNNNNN nice........deep and loud......not like a civic......sounds like a beast~ but i sold it to get a RS*R~ which is even louder.....hahahhaha......go RS*R if your looking for deepest and loudest for our G's~

 

A better question might be which exhausts are the loudest and still sounds like a
VQ35. I've heard some G's out there sound more closer to ricer tones versus the smooth purr the car comes with.

 

are we comparing thiese exhaust with out any other mods???

because other mods like an intake can make any exhaust louder

i disagree the hks is louder than the greddy, but i never heard the other ones previously mentioned

i have the hks and its great for a true dual!!