BCGARDNER@aol.com wrote:

Ed Anderson,

I read somewhere that the location of the fuel injectors on the 13B was to
create both smooth idle and high speed power over a wide RPM range (or at
least wider than a typical piston engine). I believe that the primary
injectors were placed in the side housings because that location gives a
smooth idle but the secondaries are in the manifold to increase the overall
fuel flow. Corky Bell's book "Maximum Boost" says that secondary injector
placement is not so critical because the fuel system has already developed a
high rate of air velocity by the time they kick in (on the Mazda OEM computer,
at 3800 rpm).

Barry Gardner

 
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