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

2003 G35 Sedan Dual Exhaust

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Old Jul 13, 2009 | 12:57 PM
  #16  
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very interesting *rubbing chin* wanna see the ending result and would love to hear it!
 
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Old Jul 13, 2009 | 03:41 PM
  #17  
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Yes, the issue has more to do with filling up the tank. When I first did mine I removed it completely and the fuel tank did not have a way to vent air when I added fuel or the temperature changed so I had to put it back in.

It does use engine vacuum to pull fuel vapors through the motor and help with emissions but that was not the reason for me keeping it.
 
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Old Jul 13, 2009 | 03:50 PM
  #18  
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What about your rear bumper?
 
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Old Jul 22, 2009 | 06:47 PM
  #19  
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Hows it going? Any Updates?
 
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Old Jul 23, 2009 | 11:06 PM
  #20  
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Is there a system like this on the coupes and 350Zs? Where is it located on them?
 
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Old Jul 23, 2009 | 11:45 PM
  #21  
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subscribed w/ popcorn
 
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Old Jul 24, 2009 | 12:09 PM
  #22  
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As a Scientist/Engineer I always measure things to the extreme before I do physical work.

Measure the back pressure after cat at various rpms. Each PSI is roughly 2 HP worth of restriction.
You will see that the back pressure does not begin to climb until you exceed torque peak rpm.
Then you must balance potential gain against noise increases.

http://www.veryuseful.com/mustang/te...Scavenging.pdf

http://www.thrashercharged.com/tech_htm/exhaust.shtm
 
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Old Aug 1, 2009 | 07:46 PM
  #23  
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Originally Posted by Theory_EK
Cause it returns the vapors back to the manifold and it adds in the the air/fuel ratio. On a scale of one to ten how hard was this? From my understanding it was very complicated but you made it seem like simple job.
It's not hard at all... the biggest problem is having the tools there to help you complete the job. Make sure you keep it nice and neat. Take your time to make it look good.
 
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Old Aug 1, 2009 | 08:07 PM
  #24  
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cool, looks like a double stillen
 
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Old Aug 1, 2009 | 08:15 PM
  #25  
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Nice work!
 
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Old Aug 1, 2009 | 08:22 PM
  #26  
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sick setup and writeup!
 
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Old Aug 1, 2009 | 08:41 PM
  #27  
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Thanks everybody. I feel cool when I drive my G now... not that I didn't like driving it before, it is just more complete now
 
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Old Aug 1, 2009 | 09:20 PM
  #28  
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so what's next???
 
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Old Aug 1, 2009 | 09:22 PM
  #29  
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nice setup, love the look of the rear end
now you need a drop
 
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Old Aug 1, 2009 | 10:48 PM
  #30  
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next? well i am currently working on upgrading the brakes to 2006 brakes... after that i am pretty well done.
 
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