Quote Originally Posted by mikeb75 View Post
They're pushers. Bobs 2 steps have been done (good catch on #2).

Unfortunately, due to the configuration of the OEM IC -particularly the Y pipe that feeds air from the turbo to the top side of the IC, setting up a puller fan is difficult/impossible, there is no room under the IC core. So, again like Bob said, the ducting and sealing is the important part here. Without properly doing this (or having leaks at the corners like v1) the air will obviously flow through the area of least resistance... which is not the IC core.

I think the Chinese e-bay fans (they're apparently nearly all the same, there must be only 1 factory in China who makes all the fans of this size) are rated at 800CFM (psha) for a total of 1600 CFM (not holding my breath) across the IC core. Once the concept is proven (especially seeing a good charge temperature drop post IC) we can refine the concept with more efficient fans.

And, I think, using top dollar Spal fans is contrary to our build philosophy... we're using the finest -er cheapest Chinese ebay junk
Any update on how these work?