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sti intake manifold


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I have an 06 sti intake on my 05 wagon and the runners measured 2mm larger in internal diameter than the oem plastic one. IRC the 08+ Sti has a better oem map sensor if you aren't already upgraded.
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Hmm That's odd. The reason I heard of ours flowing better is because the ceramic material that the manifold is made of is hotter than the plastic ours are made of. Who knows? I want the STi manifold so I can have a nice powder coated set of runners. :)
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Manifold flow comparisons: http://forums.nasioc.com/forums/showthread.php?t=2229576

 

I'm using a manifold from a 07 Legacy 2.5i. I had to drill out the TGV bolt holes a bit, but it fits like OEM. I'm also running a 3" Perrin inlet to a stock location 30r. I also have 8mm TGV spacers.

 

http://www.strizzyphoto.com/photos/i-wRsh2HC/0/L/i-wRsh2HC-L.jpg

 

http://www.strizzyphoto.com/photos/i-Qb2SSNs/0/L/i-Qb2SSNs-L.jpg

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