Miata Mailing List: December 1998, Message #73

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Actually, Will, perhaps I misspoke (miswrote) earlier, but I was trying
to describe the Polar Power kit when I described a cold air duct that
exits near the air filter/intake.  (I think I accidentally sent my
message out in the midst of editing it, then re-sent it in proper form
later.)  As far as I can tell from the pictures, the Racing Beat CAI kit
has an air intake "mouth" that is located and shaped in a manner similar
to the JR CAI.  By contrast, the PP kit has a conical K&N air filter
mounted  near the corner of  the valve cover.  (See
www.avatar.com/~kory/ppicai.htm).  An optional flex hose (see the red
hose end) carries air from the car's mouth up to the top of the radiator.

Regards,

Eric Amador

Will Brown wrote:

> I've been thinking of putting in a nitrous system this coming spring,
> along with a CAI (CAI first).  Was originally thinking of the RB CAI,
> since it maintains a crossover tube... as you need a spot upstream
> from the throttle body to inject the nitrous (wet manifold setup).
> But then Eric Amador posted saying the RB CAI only has a CAI duct
> that *exits* near the stock intake - the intake in this manner is not
> sealed off.  So "phooey" think I, and start to lean again towards the
> JR unit.  But, I would need to mount this nitrous injector thingy
> about 6" upstream of the throttle body... is there that much intake
> tract left, once the JR CAI is fitted?  I've never seen one in
> person.... and the typical "top down" shot of the engine bay doesn't
> convey the info I want.  Anybody got a JR CAI on their 1.8 and a tape
> measure?  :-)
>
> \/\/