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

Got my HKS installed for the coupe got a question.

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Old Mar 29, 2007 | 11:14 PM
  #16  
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I agree Stillen or FastIntentions. Those are the only true dual exhausts that I have seen that have documented (by multiple dyno) NOT to lose anything down low and gain up top.

Did you guys see this HKS thread at my350z (apparently a whole bunch of exhausts here in the USA right now are from a very poor quality batch):

http://www.my350z.com/forum/showthread.php?t=253302
 
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Old Mar 29, 2007 | 11:51 PM
  #17  
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hmm i wonder if there is anyway i got a fake hks.

Seriously, there is a big difference downlow..

it came in a big box said HKS on the side..
 
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Old Mar 30, 2007 | 02:16 PM
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bump anyone know?
 
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Old Mar 30, 2007 | 02:37 PM
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Originally Posted by 888
hmm i wonder if there is anyway i got a fake hks.

Seriously, there is a big difference downlow..

it came in a big box said HKS on the side..
ever taken your G to the track? that's literally the only way you'll know if the exhaust helped you or not.

and as for your exhaust being fake, it aint. it's legit so don't stress over it. you're killing yourself lol
 
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Old Mar 30, 2007 | 03:59 PM
  #20  
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Originally Posted by dcityjatt
well, there are always tradeoffs involved in buying mods, specially the ones for looks.

exhausts by no means provides performance, its mostly for looks and sound. gains are almost negligible.

same thing with 20 in rims, certainly make your car look nicer, but makes way for a more sturdier, rougher ride.

i wouldnt want to go back to stock for sure!
wrong about the HKS exhaust. 20" rims do make your car slower, on the track
 
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Old Mar 30, 2007 | 04:01 PM
  #21  
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Originally Posted by rcdash
I agree Stillen or FastIntentions. Those are the only true dual exhausts that I have seen that have documented (by multiple dyno) NOT to lose anything down low and gain up top.

Did you guys see this HKS thread at my350z (apparently a whole bunch of exhausts here in the USA right now are from a very poor quality batch):

http://www.my350z.com/forum/showthread.php?t=253302
that's why HKS provides a 4 year warranty. HKS has dyno gains, (which are higher than both fast intentions and stillen).
 
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Old Mar 30, 2007 | 09:23 PM
  #22  
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there is warrenty on hks?

the guy i bought it from told me no warrenty?
 
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Old Mar 30, 2007 | 09:49 PM
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You bought it from a guy or from a company?
 
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Old Mar 31, 2007 | 03:24 AM
  #24  
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bought it from a local performance store.
 
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Old Apr 1, 2007 | 08:46 PM
  #25  
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HKS exhaust and............?

There are no real advantages to just an exhaust system. (except sound)
Unless you have a better intake and at least a 5/16" spacer you've almost
wasted your $! You've got to get more air into your intake so the exhaust
mod will be realized.......air in/exhaust out.
 
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Old Apr 3, 2007 | 11:51 PM
  #26  
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^ ^ ^ Do you burn more gas with a intake/ spacer / hks ??
i have injen cai, and hks, and considering the spacer. but with more air flow into the engine wouldnt you burn more gas?? as if the Gs horrible mpg doesnt already burn a hole in my wallet. . . just wondering
 
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Old Apr 4, 2007 | 12:10 AM
  #27  
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Originally Posted by G_Meister_
^ ^ ^ Do you burn more gas with a intake/ spacer / hks ??
i have injen cai, and hks, and considering the spacer. but with more air flow into the engine wouldnt you burn more gas?? as if the Gs horrible mpg doesnt already burn a hole in my wallet. . . just wondering
I haven't noticed using more gasoline. However, people do tend to drive a bit more agressively, for whatever reason(s) when these type of mods are installed . . . And as such, you will definitely use more fuel.
 
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Old Apr 4, 2007 | 06:37 PM
  #28  
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how about adding headers and hfc's, that may help. i think i don't have any of those but plan on getting them soon
 
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Old Apr 9, 2007 | 09:15 PM
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Originally Posted by b00stedjustin
that's why HKS provides a 4 year warranty. HKS has dyno gains, (which are higher than both fast intentions and stillen).
i looked high and low for a before/after dyno comparison for hks on this site and my350 and couldn't find it (when I was shopping for exhausts)... link?
 
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Old Apr 9, 2007 | 09:26 PM
  #30  
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Originally Posted by rcdash
i looked high and low for a before/after dyno comparison for hks on this site and my350 and couldn't find it (when I was shopping for exhausts)... link?
here

 
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