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87 Caballero Amarillo, original 305/200-4R, QJ
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Cowl induction really doesn't work out well with fuel injection. The air entrance with FI is all the way at the front of the engine, the cowl entrance is all the way at the back. Linking those 2 would create plumbing issues, airflow at low speed issues, it'd be somewhat like plumbing a stock carburated airhorn in a U shape, as bad as those things were for choking air intake, it'd be worse.

You'd only possibly see any power advantages after reaching 70-80mph+ and creating enough pressure at the base of the windshield to overcome the restricted, long air passages and feed that extra bit of pressure into the throttle body.

And that's not to mention any issues with the MAF/MAP systems.
 

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87 Caballero Amarillo, original 305/200-4R, QJ
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1,736 Posts
There's 2 spots under the hood that really don't get warm, like the rest of the area under the hood. That's the spots right behind the headlights and the battery happens to sit in one of them. That leaves the drivers side open for TBI using a 'cold air intake' snorkel with a cone/box on the end, pulling in that colder air from next to the vacuum cannister.

It's why there's a long neck on the stock air cleaner, pointed right at the battery, when you'd think that a short or slotted opening in the path of the fan would be more beneficial.
 

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87 Caballero Amarillo, original 305/200-4R, QJ
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1,736 Posts
Ehh. That's a lot of work for little to no gain as I can see it, would only do anything if there was an open TB, no filter or if using a form of inducted air channeled into the filter, like a ram-air setup. The TB will be only partially open most times, except at wot or close to it, so trying to ram air past it will just make the map/maf sensors close it even more.

Youd see more benefit from a simple cold-air induction setup as that'll cover the whole range of throttle response, not just wot at high enough speeds for enough pressure to actually see the cowl. It's a pretty neat idea, just mostly impractical.

Imho.
 
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