CNTRT

I know a lot of videos do not capture the true sound of exhaust notes, but I think this one captures the sound pretty well. Yesterday I removed my exhaust resonator and replaced it with stainless steel straight pipe. I kept the stock mufflers.

In my opinion, it sounds a good deal more aggressive than stock, but it is not too loud, and it is not offensive at all in the cabin. I'd recommend this mod if you're on a budget.

craziexstylez

How much did it end up costing you?

CNTRT

I took it to a muffler shop. They charged me $80 to cut out the resonator, and weld in what they say is stainless steel pipe in its place.

compyelc4

Good thing you added that drag chute. Sounds like you're going to need it. :-)

CNTRT

Here's another quick video

Dab

Sounds Great! Do you know if you lost any horse power making the change?

CNTRT

I don't know how much power I would actually lose from removing the resonator... Maybe someone who is more inclined in the realm of mechanical engineering can chime in...

But I beat a G37x coupe from a stop light to 60mph that same night I got it removed, so I probably didn't lose much hp lol.

*im not under the impression that I gained any hp... I just don't think i lost a significant amount of hp.

Dab

Nice!!!!, i think thats my next mod!!!

kasdepwel

you do not lose hp from a straight through resonator

CNTRT

what do you mean a straight through resonator? I removed my resonator.

kasdepwel

A resonator is just a straight through muffler.

CNTRT

Right. But I think the concern is removing too much back pressure from the exhaust, which can change the performance of the engine.

I still love the way it sounds, I'm just not sure if I lost any performance or efficiency as a result of less backpressure. I'm not too concerned about it, but I just don't have an answer to Dab's question on the topic

MadMax07SL

It's not lost back pressure that is your nemesis, it's reduced velocity. Being that the pipe you put in is roughly the same inside diameter as the resonator, you haven't changed the size of the stream. Therefore exhaust velocity likely hasn't changed, thus performance shouldn't change in either direction. Performance exhausts on the other hand are designed to increase velocity over stock, resulting in possible minor HP gains.

CNTRT

good to know! Thank you for the explanation.

the only performance difference I've really noticed is that my gas mileage has suffered since I've done this mod..... But that's only because I've been almost exclusively driving in manual mode and keeping the rpms higher than normal so that I can hear the sweet sound of the exhaust 😎

Lol

Roddy13

There is no chance you lost power from removing this resonator from your exhaust. Who ever posted that is out to lunch.

OP did you consider deleting the 3rd cat?

CNTRT

I am not messing with the cat(s). This car is a lease and I kept my resonator so that I can have it re-installed in 2.5 years when I return the car. This is a good enough sound for me.

Roddy13

Just to point out... You could keep the 3rd Cat and get it put back in at the end of lease also....

CNTRT

Yes but I don't want to 😉

Dab

So i really wanted to know if this changes the HP or not but i found this old vid i hope this helps. I still think its a cool mod but this video explains what happens when you remove the resonator.

CNTRT

I saw that vid yesterday. He had different types of resonators there. What he's saying may or may not be the case for our vehicle and its type of resonator

CNTRT

So I decided to get creative with the cinematography...

I mounted a GoPro on the hood, and ran a microphone to the trunk, and mounted it just below the rear license plate light on the chrome trim on the trunk....

So its a bit of an optical illusion, because the video is being recorded in the front of the car, but the audio is being recorded from the rear, essentially right above the exhaust outlets...

In real life, the exhaust is not NEARLY as loud from the front of the car. It's very tasteful... Anyway, you can hear a distinct "pop" from the exhaust at 27 seconds, and at 48 seconds into the vid... Enjoy

barkeep8

Maybe I am just too old to enjoy this sound. I grew up around American V8s. I realize that a lot of the younger generations these days enjoy the sound of Honda's with coffee can fart tips and what not but I just don't like it much. To me, this sounds less refined than stock and a bit ricey. Why you'd want backfiring or popping is kind of a mystery to me too. I am not criticizing your choice or preference, just kind of surprised no one has mentioned that they think the car sounds worse than a stock exhaust. I know there is only so much sound available from a V6 vs V8 but I think the stock Maxima exhaust sounds great inside the car.

BlakMaxiJoey

i have always tought that resonators makes the air flow more laminar to reduce the noise by a turbulent flow...
from what i have had heard, increase the x-sectional area of the pipe if the flow is increased to maintain efficiency and for power gains.
which is why, i have this thinking that if i increase the area of the exhaust, but keep the same power output, the flow will slow down (at high revs, of course), which will reduce power output (but very minimal, since it is stock engine).

if you like the sound and feel of deleted res and/or muffler, go for it.
because you’re not really losing much to notice (at high revs).
for racing/track use, i say up the hp output to get the power you want with that change.

please, correct me if i am mistaken.

CNTRT

I don't like Ricey sounding exhausts either... This doesn't sound ricey. It's a bit deeper in person, but regardless, this IS still the stock exhaust. Just with the resonator removed, which makes it flow a little more freely and it's a bit louder... But the qualities of the stock exhaust sound are the same. Just amplified.

You don't like the sound of a stock G35 or FX35? Our vehicles have the same engine, with just a more restrictive stock exhaust... So freeing it up, allows for that infamous VQ35 sound...

Also, if you look at reviews on YouTube of a lot of new performance vehicles, most of them have a sport setting on the exhaust that opens valves in the exhaust and causes the popping sounds. It is a sought after affect these days...

i respect your opinion... But for $80, and just cutting out a part of the exhaust, as opposed to spending hundreds on an aftermarket one, I'm happy with the results!!!

barkeep8

I actually tried to delete my reply to your post shortly after I responded because I realized I was sounding negative. By all means I believe you should modify your car however you enjoy and see fit. I apologize for the negative connotation in my reply. I'm new here and certainly don't want to get off on the wrong foot. You've done a great job documenting and sharing your experience and forum posters like yourself make this place worth coming back to.

Thanks for your contribution!

CNTRT

I didn't take offense to anything you said. Sorry if it came off that way. It's all good. We all have different tastes. Nothing to apologize for.

thank you for the compliment btw!

compyelc4

If you like that pop/burbling then try manual shifting, holding the rpm's high in first then letting off on the gas. That will majorly increase the popping/burbling effect. I first noticed this on my C6 Corvette after adding catback Corsa Extremes. Not too gnarly when decelerating easily in 2nd or 3rd, but MAN what a blast when decelerating in 1st from around 2,000 rpm. Drops my 71 years of age down to about 16 years old for a few seconds. Temporary Fountain of Youth.

CNTRT

yeah I think that's what I did in the vid when you heard the pop sound. I was in first and revved to about 6k and then let off. I didn't know our cars could do that with just removing the resonator lol

Dab

You drive like i do, LOL

Todd Preisler

Sounds great--it's hard to really discern, but in person does it sound more like the G35 or FX35 or even the 350 Z than it does in the videos?

CNTRT

kind of... I havent heard it from outside the car, so from the driver's seat, I get the engine noise and the exhaust, so I dont know for sure. But I believe its similar to the G35 exhaust, maybe with a slightly different tone.

AAQ27

in my opinion this sounds to ricer-ish. Or should I say like a honda tbh. It doesn't have a deep sound to it its just raspy. Muffler deletes sounds way better. Just a personal preference i guess.

CNTRT

muffler delete would have cost me more, plus it would have been louder I think. I wouldn't call it ricey. It does sound a little deeper in person, but it does have a bit of rasp as well. My preference would be a cat back exhaust but I can't justify the price.

I personally feel like the resonator delete was $80 well spent, but I respect your opinion

AAQ27

Ya your right it would be louder if u did a muffler delete. And ya for the money i agree you got what you paid for. As long as you like it thats all that matters. Enjoy it

Litldevlmike

Anyone get a p0171 code after doing a resonator delete it happened 3 weeks later anyone have any idea what may be causing this?

Richard66

Look Here

https://repairpal.com/obd-ii-code-p0171

compyelc4

I don't see how deleting anything after the cats can cause a code. All of the parts/systems mentioned in your article are "before" and including the cats. Nothing behind that stuff.

Litldevlmike

Thanks richard66 I finally had a chance to take the car to nissan they ran a bunch of test and finally found that the pcv valve was not functioning properly and was letting oil into my intake And the two hoses that run from the pcv to the intake and the hoses from the brake booster had rotted out a bit causing more air to enter into the system causing the code I was getting only reason I thought it could been somthing related to my delete was I thought the 02 sensors were seeing more air flowing through the exhaust due to loss of some back pressure but either way it all worked out thanks for the info

oldblackie

I'm old too, have had quite a few flathead fords, they had an awesome sound for a small V-8.

Mustafa Dahe

Sounds great, how much you paid $$
No check engine light or any other light in the dash?

Thank you