Marc Wiese wrote:

I just wanted to see if many of you agreed with this advice on Mazda

Competition's web site:

"If you are using a stock (cast-iron) water pump, we recommend "gutting"

the stock thermostat, leaving just the thermostat casing. Because some
"restriction" is helpful, generally removing the thermostat is not as
effective as using a gutted thermostat or restrictor. It is also
important to plug the thermostat housing's water bypass. This can be
done very easily by tapping the hole (1/2" pipe tap) and installing a
plug."<<

You plan on using the remnants of the thermostat, Paul, or running wide
open, just using the cowl flaps?
Marc Wiese

I think you get the same benefit running a 20 or 24  psi pressure cap
without the pump HP loss in the restrictor. I always thought 
a restrictor to up the pressure in the block and the pump was a dumb idea.

And of course closing down the cowl flaps at cruise speed lowers the cooling
drag.

Paul Lamar
 
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