http://search.ebay.com/search/search.dl ... arch&fgtp=
The only reason I started looking at these is because they have the inlet and the outlet on the same side like the z31. However, I dont understand how this "double pass" design can be any better than just a regular design. It still passes through the same amount of surface area. Seems like just a selling gimick.
The only reason I started looking at these is because they have the inlet and the outlet on the same side like the z31. However, I dont understand how this "double pass" design can be any better than just a regular design. It still passes through the same amount of surface area. Seems like just a selling gimick.
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