07-01-2014, 10:36 AM
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#1 (permalink)
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A True Z Fanatic
Join Date: Oct 2009
Location: Canada
Posts: 1,156
Drives: 370z
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Quote:
Originally Posted by N0SL3N
I would think with the intake you would want to have the largest ID at the filter and the smallest at the TB. That way you can increase the velocity of the air flow into the manifold. If you have restricted sections (by the MAFs) you will be creating a vacuum that prevents the maximum amount of air from flowing.
So I would think you want something like 2.75" - 2.5" - 2.35".
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Depend what your goal is . This is partialy true.
If your pre-throttle tube is smaller than the Tb itself and the Maf . You are killing the throttle respond which for an N/a setup isnt something you want.
But I totaly agree from the filter up to the entry of the maf tube. Should be bigger
this is what was done on my custom cai... starting from 3" down to 63.5mm.
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