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

$1000 EXHAUST AND HEADERS

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Old Jan 9, 2004 | 04:19 AM
  #1  
LetsGoo's Avatar
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$1000 EXHAUST AND HEADERS

Hey guys what's up i been checking some stuff out and i think i want the injen exhaust and i want the borla headers and i have the injen CAI installed now....so i was thinking after i get all of that done i will have close to 320hp and around 300 torque and i have a whole sale acc but i haven't checked for price's but i was thinking i can get every thing for around $1000 tell me what u guys think about the combo and the price range difference and the HP numbers i came up with if u think im close or not ?? thx a lot

 
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Old Jan 9, 2004 | 04:28 AM
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From: Sin City
Re: $1000 EXHAUST AND HEADERS

How do you figure you're picking up that much HP from just CAI, exhaust, and headers?

"All the Power in the World resides in the Eyes..."
 
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Old Jan 9, 2004 | 04:35 AM
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Re: $1000 EXHAUST AND HEADERS

i think people have lost HP from those headers. They're no equal legnth ( I dont think) Do a bunch or RESEARCH first

 
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Old Jan 9, 2004 | 05:30 AM
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Re: $1000 EXHAUST AND HEADERS

I'm all about research...But to save you a little trouble I'll say that 2k2 is right- most people that have dynoed the Borlas have experience either no gain or loss...Check out www.i-m-racing.com to see what's out...Yeah, it's a lazy way to search for parts but I'm tired and about to get offline and don't feel like typing too much...So see what's available, research the components, then draw your own conclusions

BTW, if you're just adding up the company's claimed peak HP gains and thinking that's what you'll get, stop that...It's "ricer math" and not how it works

"All the Power in the World resides in the Eyes..."
 
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Old Jan 9, 2004 | 10:10 AM
  #6  
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Re: $1000 EXHAUST AND HEADERS

Yes that's some ricer math if I ever saw it. I/H/E = 40hp

Hey how about throw in a Crawford plenum for another 20hp, and then some RT high flow cats for 10 more hp. Then you'll have 350hp easy.

Ivory Pearl coupe
 
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Old Jan 9, 2004 | 10:30 AM
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Re: $1000 EXHAUST AND HEADERS

Don't forget the stickers or decals that come with those parts. It will add 5hp per sticker so that would be another 15 hp.



<font color=blue>04 CB COUPE / WILLOW / PREM PACK</font color=blue>
 
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Old Jan 9, 2004 | 12:01 PM
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Re: $1000 EXHAUST AND HEADERS

letsgoo (Journeyman)
01/09/04 01:19 AM

Hey guys what's up i been checking some stuff out and i think i want the injen exhaust and i want the borla headers and i have the injen CAI installed now....so i was thinking after i get all of that done i will have close to 320hp and around 300 torque and i have a whole sale acc but i haven't checked for price's but i was thinking i can get every thing for around $1000 tell me what u guys think about the combo and the price range difference and the HP numbers i came up with if u think im close or not ?? thx a lot
__________________________________________________ _

Well, I can see that you've picked up on Injen's claim's for HP gains on the intake and exhaust, which are a weeeeeeee bit on the high side of creative marketing. They don't produce as much as Injen claims, even though I love both products. The borla header's don't make power, David borla is on record for having said his G/Z header will only make 1 or 2 hp. Don't waste your money on the Borla for such a punny gain, look at what it'll cost to install to. If you going to spend a dime on headers get either the Stillen, Nismo or Crawford headers. The best way to get a idea of what kind of power gains you will FACTUALY get from mods is to go to my350Z.com and spend a couple hours running search's and wading through lots of threads. They have lots of discussions and posts with dyno's that will give you a real picture, not marketing hype.

"All that's necessary for the forces of evil to win in the world is for enough good men to do nothing.”
Edmund Burke

G35 6mt
 
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Old Jan 9, 2004 | 12:04 PM
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Re: $1000 EXHAUST AND HEADERS

My drilled aluminum pedals added 5 hp.

2003 Twilight Blue 5AT Sedan, sunroof,
Graphite Leather, splashguards,
12 wire Hyper-grounding kit,
350Z intake duct, Stillen Hi-Flow Airbox
Underbody rear diffusers, Drilled aluminum pedals
 
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Old Jan 9, 2004 | 12:47 PM
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From: Sin City
Re: $1000 EXHAUST AND HEADERS

LOL "creative marketing"...That's awesome

"All the Power in the World resides in the Eyes..."
 
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Old Jan 9, 2004 | 01:28 PM
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Re: $1000 EXHAUST AND HEADERS

Man, I tell ya in researching the aftermarket on this car and of course the Z, creative marketing is a mine field to get past. It's in HP claims and suspension stuff.

"All that's necessary for the forces of evil to win in the world is for enough good men to do nothing.”
Edmund Burke

G35 6mt
 
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Old Jan 9, 2004 | 01:29 PM
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Re: $1000 EXHAUST AND HEADERS

Don't do any headers until you've swapped in high flow cats. The stock cats are further "downstream" and a tighter chokepoint than the stock headers, so aftermarket headers can only speed the flowthrough so much. Plus headers are about the most expensive piece to install other than turbos (and if you're installing turbos, I don't think you'll be using the headers). The only reason I haven't done cats is that I don't think I'd like the sound (from the descriptions I've heard) and there's some questionable legality to it, even the emissions approved ones.

-Jack
Obsidian '03 G35 Sports Coupe
Titanium '03 MX-5 Shinsen #532
 
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Old Jan 9, 2004 | 02:34 PM
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Re: $1000 EXHAUST AND HEADERS

Ok Here is the deal:

1st: Borla's headers are terrible : they add no more than 2 hp and lose about 2 hp (depending on which dyno you look at at). So, it's a total waste of moneyl.
2nd: Remember that you will have to pay a lot for the installation of those headers , so make sure to pick the right ones.
3rd: The right ones: Stillen (best price/performance ratio and a VERY respectable performance gain), or Crawford (Also VERY good performance gain - but are much more expensive).
4th: You almost HAVE to get high flow cats with headers to uncork their performance, as well as a good exhaust (read "Stillen" exhaust).
5th: The most you will ever get from a Headers/cats/exhaust comobo (according to some of the dynos done by Doug and my own observations/experience) is about 25 hp at the wheels.

EDIT:
6th: Expect to pay about $2800. That's $811+$450 (labor) for headers, $900+$80 (labor) for exhaust, $500+$80 (labor) for RT cats. Subtract $200-300 if you get a cheaper (Borla) exhaust.

I just want to tell you what my opinion is with respect to what you're gettign yourself into.

Good luck

Gurgen

<P ID="edit"><FONT class="small"><EM>Edited by gurgenpb on 01/09/04 11:43 AM.</EM></FONT></P>
 
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Old Jan 9, 2004 | 05:28 PM
  #14  
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Re: $1000 EXHAUST AND HEADERS

lol you guys are cold man.

 
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Old Jan 9, 2004 | 09:18 PM
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Re: $1000 EXHAUST AND HEADERS

dont understand what oyu mean by "cold". I am just trying to help. That's the truth - I sincerely hope LETSGOO - that you have luck with your installs. It is just reality - the law of diminishing returns that I experienced first-hand...

Gurgen

 
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