Miata Mailing List: August 1993, Message #77
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   From: Al Jenab 
Subject: RE>Improving Air Intake
   Date: Tue, 10 Aug 1993 11:23:53 -0400


Mike Rother writes:

"Another option.  It is possible to run a straight snorkel off the
*front side* of the stock airbox - ending with its opening just to the
left of the driver-side fan shroud.  This seems to be a much cooler
area - with considerable outside air coming over and around the
radiator.  There would be little ram-air effect, but the intake air
would be cooler.  The new snorkel would be about 1/2 the length and
straighter than the stock snorkel, which could slightly change the
"tuning" of the power curve.

What do you think??"

That might be a good low-cost option for those folks who still have the stock
intake.  The HKS system relocates the air filter in such a way as to prevent
this.  My problem is compounded by the Millen header which requires the heat
shield on the exhaust manifold to be removed.  Underhood temperatures are
noticeably increased, and the air intake is right by the header!

The only other option I've seen that might work for me is to cut a few 2 inch
diameter holes in the firewall right below the hood line.  Air would be drawn
in right at the base of the windshield where the wipers sit.  I saw a guy with
a Car Tech turbo that had done it and said it worked pretty well.  I wouldn't
think structural integrity would be compromised.  I would go one step further
and put a box around the intake so only cold  air came through the firewall
holes.
-Al