Intake & Exhaust Questions and info regarding various aftermatket exhaust systems for the G35 (Headers,Y-Pipes, and Cat-Back Systems)

y-pipe

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Old Sep 5, 2003 | 05:12 PM
  #1  
culmination's Avatar
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From: Rowland Heights CA
y-pipe

we all debated if the header that is made for the 350z would fit the sedan as well... and the most reply i read was.."it should fit."

im just curious if an aftermarket y-pipe made for the 350z will fit the sedan as well.

Friends don't let friends drive stock
 
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Old Sep 6, 2003 | 12:29 AM
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Re: y-pipe

If I had a header on my list, I'd buy it, cause I fully believe it would fit. I'd be stunned if they can't work or their's something that can't be worked around. Just doesn't add up that they wouldn't fit. That's my version of it should fit, but I'd put my money where my mouth is, that's "IF" I wanted one at this time, which I don't.

On the Y-pipe, I guarantee they will fit. I have purchased this custom stainless y-pipe with magnaflow high flow cats. I'm gonna replace it's sad y collector or make true duals out of it, not sure yet





Ivry 6mt sed
Crawford Pleneum
Injen CAI
22" resonator
Cusco sway bars
350Z springs&struts
Enkei RPM2

 
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Old Sep 6, 2003 | 01:57 AM
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Re: y-pipe

great thanks for the reply because i was thinking about changing the entire exhaust system from headers to the mufflers.. this is the setup i am considering

borla headers--> high flow cat --> fujitsubo y-pipe --> greddy catback.

if i can get someone to say that they can all fit on a g35 sedan with 100% certainity, i would really consider getting that setup.

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Old Sep 6, 2003 | 12:01 PM
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Re: y-pipe

this is the setup i am considering

1.borla headers--> 2.high flow cat --> 3 fujitsubo y-pipe --> 4.greddy catback.

if i can get someone to say that they can all fit on a g35 sedan with 100% certainity, i would really consider getting that setup.
__________________________________________________ _

I 100% gurantee that 2,3, and 4* will fit.
*providing that the Greddy bolt's to the end of the y-pipe, which I'm positive it does.

Let me throw you a couple of ways of thinking about the header, you decide what you think of my thinking for yourself.
You could buy on slightly used borla header off my350z.com, and save some money to hedge against the possibility of non fitement, seams like theirs always someone selling one used their. That way your a bit ahead of the money game "IF" you run into fitment issues. Or you can go ahead and buy one new, around $595. If you are willing to try and install it yourself you will save allot of money, it's not hard to do, just TIME consuming to do (at least 8 hours). And if they don't fit, just resell the header on my350Z.com yourself and recoupe a certain amount of $. Of course you'll be out allot of your time from the install and de-install. But, having just said all that, if I had wanted the header, I would order it and try, even against the above. Just my 2 cents, be your own judge/risk taker. Still saying, I don't see much risk.

And their's a plan B, buy and install parts 2,3 and 4 now and just wait for someone else to prove to you that the header fits in the sedan and then get the header.

Regards,

Jim C.










Ivry 6mt sed
Crawford Pleneum
Injen CAI
22" resonator
Cusco sway bars
350Z springs&struts
Enkei RPM2

 
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Old Sep 6, 2003 | 12:14 PM
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Re: y-pipe

BTW, I fully agree that getting rid of the stock y-pipe should be part of any serious exhaust system upgrade. The stock y- pipe just doesn't cut it. I was thinking about the Fujitsubo pipe, but got a can't refuse price on the setup I'm getting now and it of course already has the high flow cats included with it. Here's a pic of the stock Y-pipe and of course the cat pipes it hooks up to.


Ivry 6mt sed
Crawford Pleneum
Injen CAI
22" resonator
Cusco sway bars
350Z springs&struts
Enkei RPM2

 
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Old Sep 7, 2003 | 02:03 AM
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Re: y-pipe

thanks Gsedan35 i really appreciate your advice. but let me just ask you one thing.. where did you get your high flow cat? are there manufacturers that makes a high flow cat that will just bolt on? thanks~

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Old Sep 7, 2003 | 02:36 AM
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Re: y-pipe

The cat's are normally seperate parts from the Y-pipe. In other word's, system goes like this. Headers, short pipe with cats, y-pipe and then the center section and so on. In my case I bought a special custom Y-pipe that has the Magnaflow high flow cats built into the Y-pipe, all in one piece.

Random technology should be out with high flow cats now and crawford Z car should be out with their's real quick. Do a search on my350z.com for both and you will get the info. In fact I believe one dealer on the site did a post saying he's going to be a dealer for the random high flow cat pipes.

Here's another pic of the Y-pipe I'm getting for my car and it's sitting next to the stock Y-pipe. Notice the bold flanges where the cat pipes bolt on to the stock Y-pipe



Same thing, but side by side


Ivry 6mt sed
Crawford Pleneum
Injen CAI
22" resonator
Cusco sway bars
350Z springs&struts
Enkei RPM2

 
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Old Sep 7, 2003 | 02:29 PM
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Re: y-pipe

GSedan35

Hey. Just wanted to run something by you. How is this fujitsobo y-pipe. Is it good? I have got the Crawford's high flow cats and wanna pair it with a good y-pipe. Do you suggest this one, or anothr one? I am really concerned with gaining more torque and not necessarily horsepower, which these could do.

Gurgen


2003.0 G35 5AT Sedan Aero/Sport
<font color=blue>TechoSquare ECU</font color=blue>
Injen CAI
Crawford Plenum
Crawford High-Flow Cats
22" Magnaflow Resonator
Eibach Pro Kit
Cusco Sway Bars (soon)
 
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Old Sep 7, 2003 | 03:55 PM
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Re: y-pipe

Well, I originally did not have any exhaust mods very high up my do to list. But I was offered a "cannot refuse" price on this Y-pipe that I'm getting, so doing the exhaust moved to the top. But, before that, I was thinking to myself that the fujitsobo y-pipe would be a key part of whatever I would do in the future.

I could see doing the fujitsobo Y-pipe and keeping everything else the same. But you've got some other mods that I think might be held back by not going further than that. So I'd think you should replace the stock muffler as well. And theirs something else that comes to mind.

Have you given any thought to the upcomming stilling true dual system? Their Z system tested out quite well in that Z sport magizine shoot out. I didn't think their use of 2.5" piping was the right thing to do, yet their test results show their's something to their design I didn't realize. They use a X crossover piece in their system. That's what make's the 2.5" pipe diameter work flow wise. The stillen system will likely be expensive, but it's true dual nature would replace your stock y-pipe as part of the process. But, certainly doing the fujitsobo
Y-pipe and maybe a new muffler, would be have less costly than the stillen true dual system, and a great idea, IMO.



Ivry 6mt sed
Crawford Pleneum
Injen CAI
22" resonator
Cusco sway bars
350Z springs&struts
Enkei RPM2

 
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Old Sep 8, 2003 | 12:57 AM
  #10  
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Re: y-pipe

Thanks for the reply.

I was just wondering if this y-pipe makes torque in the mid-range. After seeing that picture in the japanese magazine of a y-pipe makeing enormous amounts of torque in the low end, I as just hoping that this will take care of it. I just don't think that the dual 2.5 pipes of the stillen system will make alot of towque, not much more than a good y-pipe. I am afraid that the stillen dual catback for the sedan is made for their supercharger system (or at least with it in mind).

As you knwo, I have just an AWESOME setup that does amazing things in the hign end. Think about this for a second, if I am accelerating from rest using autostick, my engine revs to 7100 in 1st gear, at which point when I shift, I am back on the ~5100 rpm mark and up from there, etc, etc all the way to 5th gear. The only thing that I really need is some torque in the mid-low end for the 1st gear, because other than here (at the beginning of my run) I am not using the low end. THat's why a y-pipe can do great things, the right one that is.

Gsedan35, let me know what you think. I have about 400 bucks worth of credit at i-m-racing.com that will basically pay for the y-pipe (instead of the cusco sways I was originally thinking about).

What do you think?

Gurgen

2003.0 G35 5AT Sedan Aero/Sport
<font color=blue>TechoSquare ECU</font color=blue>
Injen CAI
Crawford Plenum
Crawford High-Flow Cats
22" Magnaflow Resonator
Eibach Pro Kit
Cusco Sway Bars (soon)
 
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Old Sep 10, 2003 | 01:10 AM
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Re: y-pipe

Just Wondering, do you guys think that changing the Y-Pipe will also change the sound of the exhaust. . . throatier, deeper, etc. . ??? Not that I am buying it strictly for sound but it will be a sure plus. . .

 
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Old Sep 11, 2003 | 11:16 PM
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Re: y-pipe

I put a Warpspeed performance Y pipe on my '99 Maxima (VQ30, similar engine to the G's)... In the year and a half that I had it on the car I never even really noticed it until I started it once with the windows rolled down. It had a quiet rumble to it, and if you stood behind the car while someone revved the engine you could hear it a little better. Definitely nowhere near as loud as the popcharger or an aftermarket muffler. Plus Warpspeed claimed it was good for 10-15 HP and my butt-dyno agreed. I would assume the gains are similar or better for the VQ35.

'03.5 Ivory Pearl 6MT
 
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Old Sep 12, 2003 | 12:27 AM
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Re: y-pipe

maximafia,

Didn't part of your Maxima's Hp and sound improvements come from the loss of the small primary cats?

Doesn't Crawford's and Random's Cats replace the G35s four stock cats with two high flow units for similar improvements?

DaveO


 
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Old Sep 12, 2003 | 01:23 AM
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Re: y-pipe

Wait, so your saying Stillen's exhaust replaces the stock Y-Pipe? Hence, if you have a Stillen exhaust you shouldn't/couldn't change to a Y-Pipe? Hmmmm.....

"Use the Forced Induction Luke!"
-Jedi
2003 G35C, 6MT, Navi, Black Obsidian/Graphite
 
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