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Old Jan 24, 2007 | 01:56 PM
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Do u care how loud it is? If not, get an X pipe and have it cut off right after the X pipe with small mufflers. Itll give you ~15-20 ft lb gain in torque and 15-20 whp with a setup like that.
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Old Jan 24, 2007 | 02:10 PM
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The AP is pretty much an open pipe, it can be very loud and I'm not even NA, so NA with test pipes and an aftermarket y-pipe I would Imagine its just as loud if not louder than the TPro1 exhaust. But its has a sweet tone both NA and FI....
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Old Jan 24, 2007 | 02:11 PM
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Originally Posted by 2slo2bfurious
The AP is pretty much an open pipe, it can be very loud and I'm not even NA, so NA with test pipes and an aftermarket y-pipe I would Imagine its just as loud if not louder than the TPro1 exhaust. But its has a sweet tone both NA and FI....

Yup, it sounds like a F1 car. I always get compliments on the tone and the look.
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Old Jan 24, 2007 | 08:26 PM
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Originally Posted by plumpzz
Do u care how loud it is? If not, get an X pipe and have it cut off right after the X pipe with small mufflers. Itll give you ~15-20 ft lb gain in torque and 15-20 whp with a setup like that.
I don't care about anything but the law and power. If the setup is street legal and makes the most power, then please tell me more....
Thank you.
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Old Jan 24, 2007 | 08:28 PM
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Originally Posted by 97supratt
I'm not trying to convince you to buy the AP exhaust. Actually you can't buy it even if you tried. They do not produce them anymore.

Next, the exhaust would make more power if it was coupled to a 3" outlet y-pipe that is correct. But I am not losing power by having it go from 2.3" to 3".

Also the weight issue, my greddy evo2's were heavy. They were more than 20 lbs over the AP. I'm not here to prove anything but if I were you, I would either get the JIC single or the AAM. The single exhausts are easier to install plus you save a lot on weight.

Plus i've ran people with more mods and we're neck and neck. That should say a lot.
I can buy the AP exhaust, I spoke to a rep earlier today on the phone who has two in stock.
I hear what you mean about your power with your setup.
Install ease doesn't mean much to me, they are all exhausts. As for contact, I would much prefer that the exhaust does not touch anything, so I don't have rattles at certain RPM's or in reverse.
I appreciate your input very much.
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Old Jan 24, 2007 | 08:29 PM
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Originally Posted by 3hree5ive0ero
I just received a PM from you asking about my mods and my time and I responded.

Here's my take on it. I had the Pro-1 exhaust (inlet of 3") attached to my stock y-pipe (which I thought had an outlet of 2.5"). You can definitely make a little bit more power if you had 3" outlet for the y-pipe, but I don't think you'd lose any power (you just make less). As for the exhausts, they're all pretty subjective when it comes to how much they add. They all give about the same and the few whp diff won't do much for you. The single exit exhausts that I've seen don't make more horsepower than true duals or even dual exits. However, they are lighter so maybe that's why people get them.
Thanks for the input, and PM's

This takes me a step back..... I'm looking for power to be the #1 #2 and #3 reason I buy one.
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Old Jan 24, 2007 | 08:31 PM
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Originally Posted by 350Zenophile
How do you know the borla is too weak if you haven't been able to find any quantitative information?

The Sport-Z shootout had it as generating the most whp of those tested and even though it's dual, it still manages to weigh about 11lbs less than stock.
Is the Sport-Z article different than the one we spoke about earlier in the thread? As I was under the impression that the Injen with built in silencers (lol) actually won that shootout. Not impressed at all.
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Old Jan 24, 2007 | 08:34 PM
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The Z fires the cylinders on opposing banks (1,2,3,4,5,6) so an X pipe would make plenty of horsepower and torque. As long as you dump behind the driver side door, you'll be 'street legal', and as long as its below the legal decible level it'll be legal. The X pipe acts as a silencer so it'll be prett quiet compared to open cats
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Old Jan 24, 2007 | 08:39 PM
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Originally Posted by plumpzz
The Z fires the cylinders on opposing banks (1,2,3,4,5,6) so an X pipe would make plenty of horsepower and torque. As long as you dump behind the driver side door, you'll be 'street legal', and as long as its below the legal decible level it'll be legal. The X pipe acts as a silencer so it'll be prett quiet compared to open cats
I'll have to do some more studying of the underside of the car, as for placement of the exit of the exhaust..... I do believe that you have to have a muffler in the state of NC.......
What do you suggest about the x-pipe? In place of the y-pipe, I would assume? Of course, with two exits, that sounds to me almost like a true dual.....
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Old Jan 24, 2007 | 08:40 PM
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You can dump it in the center like rustangs do. Ill tell you it'll be loud. I have a video of this setup if you want to hear. And it is a true dual
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Old Jan 24, 2007 | 08:54 PM
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I seriously don't hope that you just get an x-pipe, put mufflers on, and call that an exhaust. Also, when you do what's stated above, you'll have fumes entering the cabin and the underside of the car will get dirtier with carbon deposits.

I know you don't care about how it looks or sounds, but I think you should at least get a proper exhaust.

BTW, doesn't an x-pipe merge the two pipings in the center? If so, how is that true dual? True dual means you have a pipe for each bank of cylinders.
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Old Jan 25, 2007 | 05:22 AM
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Originally Posted by 3hree5ive0ero
I seriously don't hope that you just get an x-pipe, put mufflers on, and call that an exhaust. Also, when you do what's stated above, you'll have fumes entering the cabin and the underside of the car will get dirtier with carbon deposits.

I know you don't care about how it looks or sounds, but I think you should at least get a proper exhaust.

BTW, doesn't an x-pipe merge the two pipings in the center? If so, how is that true dual? True dual means you have a pipe for each bank of cylinders.
Being that the cylinders fire in opposite succession, it seems to me that an x pipe is nearly a true dual, and it seems very unnecessary.

Back to the drawing board.

I'd love to see a dyno sheet of the AAM single.
I have a friend that may be able to make a full titanium exhaust for me, and hopefully when his schedule slows down a little he'll be able to help me out. I might do well just to wait for that.
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Old Jan 25, 2007 | 05:43 AM
  #33  
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Originally Posted by 3hree5ive0ero
BTW, doesn't an x-pipe merge the two pipings in the center? If so, how is that true dual? True dual means you have a pipe for each bank of cylinders.
As one bank's pulse exits the exhaust it creates a light vacuum in the x, improving scavenging for the opposite bank. The exhaust streams really don't intermingle through the x, so it is true dual with better scavenging than straight through. Same concept on an h-pipe, just better implementation with an x.
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Old Jan 25, 2007 | 07:44 AM
  #34  
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Originally Posted by mikead_99
As one bank's pulse exits the exhaust it creates a light vacuum in the x, improving scavenging for the opposite bank. The exhaust streams really don't intermingle through the x, so it is true dual with better scavenging than straight through. Same concept on an h-pipe, just better implementation with an x.
Ah, ok. Thanks for the explanation.
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Old Jan 25, 2007 | 08:20 AM
  #35  
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There are several things that help it work. One is the small vacuum created by the pulse. Another is increasing the momentum of the gas by increasing the velocity. When the two pipes merge, it increases the pressure and velocity of the gas, and when they exit, it creates a bigger 'pull' caused by an increase in momentum. It works very well, and it doesnt rasp and it acts as a muffler on its own. I had it on my car with straight pipes and 1 set of mufflers. It was loud, but not as loud as open headers.
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Old Jan 25, 2007 | 08:21 AM
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http://videos.streetfire.net/search/...0f0008c9f8.htm

http://videos.streetfire.net/search/...350167df50.htm

http://videos.streetfire.net/search/...35016c08d7.htm

The same setup with a better muffler:
http://videos.streetfire.net/search/...9c016bea5e.htm
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Old Jan 25, 2007 | 08:40 AM
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Okay, SVT dual exhaust. Is there an x-pipe under there? What muffler(s) were used? Dyno? Me no care about sound. Thanks
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Old Jan 25, 2007 | 09:34 AM
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Your best bang for the money is to go with magnaflow 350z exhaust system. Stay away from a dual exhaust based system when your normally aspirated. The VQ 3.5 needs the exhaust velocity to develop low end torque.. Good luck.
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Old Jan 25, 2007 | 12:04 PM
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Originally Posted by dimvar16
Your best bang for the money is to go with magnaflow 350z exhaust system. Stay away from a dual exhaust based system when your normally aspirated. The VQ 3.5 needs the exhaust velocity to develop low end torque.. Good luck.
Thanks a lot for your input. Do you have anything to back this up, I.E. a dyno sheet?
Any links to Magnaflow systems? Are they singles?
Thanks again.
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Old Jan 25, 2007 | 12:32 PM
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svrt doesn't make the system anymore..however (inserts plug), i took those mufflers off cause they were too loud (albiet ultra free flowing) and I have them for sale. PM me if you want. You should get a system like that made custom. 2.5' piping.
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