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

kinetix v+/ MD5/16 spacer combo ..

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  #1  
Old 01-16-2009 | 12:17 AM
g_boy's Avatar
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kinetix v+/ MD5/16 spacer combo ..

i was just wondering if there is any gain if i add kinetix v+/ MD5/16 spacer into my car.
 
  #2  
Old 01-16-2009 | 01:36 AM
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That would be a overall 5/8" increase in size

Many people have 5/8" spacers, i do

They will be better as long as you have good exhaust.

Realistically, unless you have the spacer for really cheap, I'd just stick with the plenum.
 
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Old 01-16-2009 | 02:38 AM
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Originally Posted by g_boy
i was just wondering if there is any gain if i add kinetix v+/ MD5/16 spacer into my car.
A very slight gain will be had by using both instead of one or the other. Realistically though, it would be so little you could probably make your car go faster by going on a diet and losing 20 pounds.

From what I've seen 1/4" to 5/16" spacer is really all you need. You will get a bit more HP as you continue to increase the size, but it's an asymptotic curve.

The ratio of HP gained : increased size after 5/16" is pretty insignificant.

All of this is taking into account you are NA. If you go FI, maybe bigger is better. I don't know.
 

Last edited by TXMAG; 01-16-2009 at 02:44 AM.
  #4  
Old 01-16-2009 | 03:26 AM
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the kinetix design the plenum with a 5/16 spacer already in place.

its not like you can stack 2 mods together and expect double the performance. That comes back to ricer math. By doing this like what others have said you turn that 5/16 into 5/8 spacer instead.

just run which ever one you have and not get the other one because it would be a waste of money.
 
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Old 01-16-2009 | 04:18 AM
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I forgot to add that you might run into fitment issues as well if you tried to stack those two.
 
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Old 01-16-2009 | 05:34 PM
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thanks alot guys.i just cancel my order.
 
  #7  
Old 01-16-2009 | 05:57 PM
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This question has been asked many times before...
 

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  #8  
Old 01-16-2009 | 06:47 PM
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+1 Spacers and plenums are not compatible with each other.
Also, after a point, increasing plenum internal volume begins to compromise TQ.
 
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