I think the main point people are saying to you is, if you change something it is no longer called "stock", regardless of what it is...

I guess our view on stock is different . If I take out the resonator or changes the cats I still consider it stock . But if I change the whole system then is no longer stock

Stock is just that. All stock parts with no replacements or deletions other than replacing worn items and that would be with like item and same sizes. Change a light bulb to HID or wider tire size is still a modded car. Change the sound of your Nismo, IMO that too would be modded. This really comes into play in competitive racing and show cars alot. They have certain criteria about how many and what type (if any) minor mods will take you out of a stock class.

Changing the STOCK cats to AFTERMARKET HFC or TP is still called STOCK?? Well, this is just beyond me...

From what I hear,(no pun inteaded) if you add HFC's w/ a Nismo Exhaust = wrasp.

So the first couple of pages were productive.........I am not sure where this went wrong. I had my F.I. TDX before I owned my NISMO because I knew that the car was more docile sounding than the previous model Z. Just a word of advice, don't call the people trying to help you retards!

Sent from my T-Mobile G-Slate via TapaTalk Pro

..... no response needed

Any sound clips of non-resonated test pipes on a Nismo with stock catback?

what?... :confused:

Personally I like induction noise on NA cars. You could check out the sound of Z's with just an intake and see if that's enough for you. No drone that way, and you keep the nismo parts.

Go with a Meisterchaft GT exhaust and call it a day.

I can't believe this thread even exists given there is an entire Exhaust section on this forum. If you can't find the answer there, you probably shouldn't have a driver's license either.

+1 on this...... This exhaust is bada**. I'm waiting for my Meisterschaft GT exhaust (three sections). You do not have to go with all 3 sections of the Meisterschaft GT exhaust, but just go with the 3rd section. With all 3 sections it will be very loud.....like a whore in a bedroom....lol

spearfish25, I completely agree with you.

The Nismo is pretty effen sweet. IMO I would wait after 5k miles until installing CAI.

I'm going to go with BERK HFCs and upRev software .

Nice....... Glad to see you made a decision.

OP, you may also be interested in just doing a CAI like the Stillen G3. An intake will add some volume but you will keep your stock exhaust.

I'm keeping my nismo stock.
I like it quiet. It's very smooth sounding with a nice purring tone that is better sounding than many loud raspy fart cannons out there.

I went thru several exhaust setups when I had my Nismo including, Non-resonated TPs w/ stock exhaust, HFC w/ stock exhaust, HFC w/ stock exhaust w/ resonators removed, HFC w/ FI 18" CF exhaust, Res. TPs w/ FI 18" CF exhaust, and lastly FI LTH w/ FI 18" CF exhaust. I can say that each setup had a different sound. From the sounds of what you are wanting I would recommend starting by removing the 2 resonators as this will keep the same Nismo exhaust tone but just with added volume which is what you are saying you want. If you still want more I would then add HFC and this will also keep the same Nismo exhaust tone but add more volume with zero rasp. Atleast I had zero rasp with this setup even though some people claim they have rasp with HFC and stock nismo exhaust. This may be due to the fact that I had FI HFC which are 300 cell and most other HFC out there are 200 cell. Just my 2 cents. Remove resonators, it's cheap and quick, if you still want a little more volume add HFC.

Way too loud for me.. They pull people over for that here in my town real quick and write a ticket.

What's way too loud? Removing resonators and adding HFC on this car will not get you pulled over for it's still somewhat tamed. If you are referring to my video in my signature well then yes possibly that could get you in trouble but this isn't the setup I'm suggesting. In the video I have FI LTH and FI exhaust. Resonators removed and HFC will be much quieter than this.

I am talking about the video. I am curious to hear how removing the Resonators sound. Does it effect your HP?

It will have no effect on horsepower only the volume of the exhaust. It's an easy process. Cut out the resonators, weld up straight pipe to replace them. If you don't like it, cut out the straight pipe and re-weld the resonators back in. You can't lose. I think a local muffler shop charge me $20 to do it.

What about passing smog? Or effect warranty?

Crazy how cautious I am now with my car.. My old 99 eclipse gst i modded the crap out of it and didnt care about warranty. But I was 23 years old.

Having the resonators removed (red circles) and having straight pipes welded in will do nothing regarding emissions. There is no impact on your warranty either.

Changing the cats (yellow circles) to HFC should not have an impact on passing emissions. Warranty, the dealer has to prove changing these parts caused the problem to deny your warranty claim.

Changing the cats to test pipes (yellow circles) WILL have an impact on passing emissions. Same deal here as above, the dealer has to prove changing these specific parts caused a problem to deny your warranty claim.

I always keep the stock parts so you can revert back to stock.

http://i1120.photobucket.com/albums/...73/Misc/28.jpg

thank you both for your help.. I will give it a try. I also heard just adding cold air intake will help a bit as well? Or am I wrong?

Adding a CAI will give you a bump in HP as well as change the tone of the engine at higher RPMS but still won't be overly intrusive in-cabin. Surprisingly CAIs on the 370z don't increase the noise a whole lot, where in every other car that I've ever owned and installed a CAI it has made a drastic increase in intake noise. A CAI also will have no effect on warranty unless the dealer can prove the issue was caused due to the install of the CAI. Again just hold on to stock parts and re-install if the time comes.

Update: installed FI test pipes for power gains and to make the exhaust note a little more audible. Did not get HFC's to eliminate all restriction, and didn't even get resonators to get the most weight saving and clearance. Should have ordered with resonators.

It definitely got louder at cold start-up and driving, but hardly noticeable at idle. However, there is a NASTY rasp when revving up or down through the 2500-3500 range. When accelerating hard, I can hear the rasp up to about 5000 rpm. IMO it sounds like sh!t and don't recommend it. Even as an engineer I can't figure out where the rasp comes from, and it's amazing that it can get through an otherwise stock Nismo exhaust.
Power gain is defintely noticeable, perhaps 15+ hp. CEL popped up after 200 miles.
For an installation note, get a good 14mm bolt head extractor before doing any work. You WILL need it. Snap the demon bolts before doing anything else.

Long tube headers will be installed in the future.

I have the Berk HFC's and I really do hate the rasp. Half tempted to just put the stock cats back on.

FAIL....... What you talking about Willis? Want to go back to stock...... This is something that I do not hear very often.

The rasp just sounds bad. Turning heads as I am driving at low speeds in first gear is nothing something I want heads to be turned for.

I do not consider my Meisterschaft exhaust to be raspy, but the exhaust & car itself turns heads. I can care-a-less which one turns heads first. Pirus exhaust is pretty quick from what I understand....jk