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Interesting that despite $800 - the Fabspeed CAI for the 987 does not work well.Thanks for the info !
I am working in this area now. The aptly termed "tunnel" is a trapezoid approx 5-1/4"" wide at the top ,8" wide at the bottom and 4-1/4" high.It does expand a bit toward the outer fender. The total depth is 9-1/2" . My current hack-plan-experiment is to use the entire tunnel as a filter housing.Then fill it with custom cut progressively finer foam filter I am playing with layers of different ppi to avoid excessive obstruction yet get adequate filtration So far I have a flat,coarse/fairly open 1" thick foam air filter immediately behind the stock louvers, then an air gap, then a finer 1" thick foam filter before it enters the engine bay.Based on the sq.in area and ppi ,it should work well but....
This is the tricky area. The rest of the system can be plumbed like the OP suggested. The air filter is difficult/uncharted waters .Ideally we need to enlarge and insulate the tunnel.It needs a small drain(with filter- done that). The enlarged tunnel would need to be a cast-in-place fiberglass 'box'.
Meanwhile, I'll see if my hack comes anywhere close to working satisfactorily before I make irreversible mods. In case people are wondering -"why is the fool doing this ? I needed to R&R #4 fuel injector. Pray to the Porsche Deity you never need to do that with the engine in place. Pelican make it sound easy but that is a subject for a different thread.
Last edited by Gelbster; 12-20-2016 at 02:09 PM.
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