I put off buying a Y-pipe for years for fear of the increased sound level. Well, as the search for more horsepower and the 'speed bug' increases as time goes on, I caved to the easy temptation of 10-15HP for $200. To be honest, I hate it. My car was too loud with only a catback (2.5"), now it is unlivable with the new W.S. Y and C.S. cat. I don't know how you guys do it. Anyway, is there a solution to my problem? Is there some kind of silencer I can buy (I think Dallas was talking about something like that)? I already have a resonator but it isn't enough. What about a 2000+ muffler? I always hear how great those are. Would that quiet my system down? I guess worse case, I'll keep the Y and put the catback back to stock diameter. A Y with a stock catback is fairly quiet from what I hear. Any advice will be much appreciated.

 

Hmm normally I would say 2000 muffler right off the bat but you have the sc right? Maybe see what the 2k2 255hp maxima guys are using for a muffler. Maybe it's a little bigger in the inlet side. Emax would know and he might have an extra muffler also. I'm not boosted but I have a Y, RT cat, cat-back and 2000 muffler. It's just louder than stock at idle/off idle. Get into the gas and that's when the growl steps in. I did have this setup (minus the Y) on boost and it didn't seem to "hurt" the performance but w/o comparing it w/ something else, I have no way of confirming. Sorry.

 

Dude, your setup is nothin! I have a WSP downpipe, 2.5" free flowing midpipe with no resonator into a flowmasters, into dual piped exhausts. The ONLY form of quitness is my stock cat. My setup is loud but nice...the kinda musclular sound only a flowmasters can deliver.

But josh...firstly I think you are gaining more than 15HP from that downpipe becuase you are SC'ed. Probubly more around 20 i'd think. Secondly, you said you already have a resonator, right? Your setup should be quite as sin IMHO

I think you should stick with what you have and be happy with it. Wait to see what WSP cooks up for quiteness.

BTW any sound clips of your ride?

 

Maybe you could get a 2K2 muffler then Dynamat (or equivilent) and insulate the inside of your car. Thats my plans for the future.

Also, have you checked for exaust leaks. My buds Civic has one around one of the hnger welds and it makes it annoyingly loud. (well i think its annoying all the time but this makes it worse )

 

Yes I would check for leaks, this would make it extremely loud.
Good Luck,
Paul

 

I am running a Budget Y, Test Pipe, no resonator and a 2k1 muffler with a 2 1/2 T-304 Mandrel bent b pipe. Sound on the highway is virtually the same as stock. In town its louder and I may put a resonator back on.

 

I tried about 3 or 4 different exhaust configurations awhile back, trying to find the optimal blend of power and quiet. In the end, I decided upon running a ypipe with the STOCK cat-back. Every other combo was louder. I even tried an APEXi RS (large-can) rear muffler back before the WS catback was available, and even though the WS is touted as being quiet, I found the combo with the ypipe to be unbearably loud. I find there's only a marginal drop in power with the stock cat-back in-place, but the much decreased noise level easily made up for the slight power drop.

If you are bent on keeping a cat-back, I did try an Edelbrock stainless rear muffler for awhile. Even with the ypipe and a custom mid-pipe, the sound level was reasonable. Worst was a resonance between ~2200 and ~3000 rpm, mostly when decellerating, but looking back the noise was not bad, just too much for a Maxima in my opinion. If you can tolerate a little rumble, that would be a recommeded muffler. Get the larger muffler, and get the heavy duty stainless one. Much higher quality muffler (materials and construction) over any other muffler I've seen. Really a very high quality muffler.

 

give me your supercharger and it will get silent

 

I got second DIBS

 

S/C doesn't add any noise... sorry! I guess he won't need to give it to you

I added the 22" Magnaflow resonator right after the cat and relocated one of the GReddy resonators just in front of rear wheel. It helped quite a bit.

Has anyone heard of/used Car Chemistry or Vortex stuff? It's supposed to quiet things down... but I don't know of anyone who has them... After putting on the 130mm tip GReddy muffler... my noise went up significantly again...

 

will a greddy catback exhaust with stock pipes be very loud?
I don't want my car to be so loud i can hear the radio... so what's the best muffler/exhaust i can get that isn't very loud.. but still sounds good when i push the pedal..

thanx

 

Im telling everybody.. get the HKS muffler rear piece and a y pipe.. the perfect sound.. not loud at all... honestly when i punch it you here the intake and thats it... the only time you hear the exhaust is when downshifting or slowing down around 2-3k thats it.. and its a humble nothing more. I really think its the cat and b pipe that make all the noise just run a stock cat and stock b pipe

 

that was the first thing i thought of too!!

 

Another setup like Jeff's. Y, RTCat, Bpipe w resonator, 2K muffler.
Loudest sound WOT is my CAI.

 

Too loud is relative... but if you want something quantifiable...

Just a GReddy SP exhaust: 88dB(A)... well under the 95dB(A) limit.

 

what's the diff between the 88db and the 95 db... you think that would be nice on a max... sounds KINDA loud.. and looks good.. and would it be good with a stock pipe? and also.. how much $$ usually?

Thanx again

 

What about a y-pipe, random tech cat and Hayame muffler...any comments?? I'm not sure how it will sound because I haven't intalled it yet but my friend has the Hayame muffler and cat converter and it gives it a nice deeep growl. not loud at all...hopefully I'm satisfied with my setup.....you guys got me second guessing my setup.

 

have you ever thought about keeping the y-pipe and exhaust and then just keeping your stock muffler? it isnt that loud at all but still gives a good amount of sound, and your car looks like more of a sleeper! if u like that kind of thing

 

Thank you so much everyone for responding. I have been terribly busy with work and some of you have had some really good suggestions and I had questions for you. So now I finally have a free moment to address this thread. I just don't want you to think I'm one of those people who asks a question, 20 people respond and not one single thank you. I am very thnakful.

First, thanks Jeff. Question, why do you say because I have an SC, a 2000+ muffler is not a good idea? Thanks.

 

Gee, thanks Craig. I complain my ride is too loud and what I get from you is 'your car is quiet, just be happy'. Oh brother lol, I'm just kidding. Wow, I can't even imagine yours! You must set off car alarms and wake up the whole neighborhood! Sorry, no sound clip.

 

That's a good idea 97, thank you. I actually thought of something like that too. Because one day I took out my rear seat(s) and O.M.G. my car was even louder than it normally is!!!! It was like the exhaust piping was in the car with me. So if seats make that big a difference in sound-deadening, I'm sure throwing some Dynomat on there as well would help even more. I just don't want the added weight.

 

Thanks Paul and 97. When you say check for leaks, what do I do? Is it as easy as getting under the car and putting my hand around the piping and if there is a leak, I'll feel a gush of air? And where could it leak? The only source I could even imaging is where the cat meets the Y or where it meets the B-pipe.

 

That's two of you now that have mentioned you have a Y and a 2K+ muffler and you think your car sound fine. That's a good sign. Did you guys ever try your cars without the 5th gen muffler? Jime, when you say in town, like what? Mine for instance is aweful at 2.5 RPMS. If I'm at 2, it's decent and if I ever get it up to 3, it's decent. But that dreaded 2.5K mark is terrible. Thanks Jime.

 

Thank you sooo much Keven, that was a great write-up. You sound as picky as me! You didn't mention a 5th gen muffler. What's your opinion on that? So you say go back to stock diamater cat-back and muffler, huh? Yeah, I might have to. What a waste of money. What is stock diamter? 2"? 2.25"? Thanks again.

 

Chunger is right, the SC has nothing to do with the noise. So are you saying you have two resonators Chunger?

 

Thanks for another opinion on a Y w/ 5th gen muffler. What inch exhaust are you running bejay? 2.5"?

 

Right, that's one of the thoughts I've had. I don't have my stock muffler any longer unfortunately. But isn't that the same as putting on a 5th gen muffler? Or is a 4th gen muffler even quieter? As for looks, my exhaust is tucked away and hidden anyway. I am filling in the exhaust half-circle thins summer. Thanks DTR.

 

2.5" upstream by the cat, 2.25" b-pipe, and I think 2" at the muffler inlet. I believe I've got a nice scavenging effect pulling from the exh manif.

Somethings working w 190hp to the wheels Gee, and I haven't even checked the Y-pipe flex yet.

My muffler opinion? +8hp and +8tq! That's my opinion

 

Hey Jime:

Where did you get your 2 1/2 T-304 Mandrel bent b pipe.?
Thx