Mark, I agree. I think the IC routes to the side (at least for Tial WG) and vents through the top.
http://www.tialmedia.com/documents/w3_tial_wginstall.pdf
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Emery
1988 930 coupe - Silver Metallic
3.3L w/GT35R, B&B Headers, RarlyL8 muffler, TurboKraft IC, Tial WG, tecGT based phased sequential EFI & ignition, Wevo shifter/coupler, ... 
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