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Old 07-19-2008, 12:05 AM   #94 (permalink)
Join Date: Jul 2008
Location: North Central Alabama
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Big Salsa - '04 Toyota Sienna LE

Silver - '10 Toyota Prius III
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Eventually I plan to automate the door by using a Basic Stamp or similar process controller to monitor the coolant temps and adjust the opening to the actual cooling needs.

If you want to automate the door you may be able to have it open whenever the fan kicks on and close afterward. I know in my car the fan kicks on after the coolant temps reach 202degF and it kicks off below 190degF. That's what I plan on doing after I get around to it.
I am new to the site, and I don't even have an MPG meter yet (my first planned modification). Then I want to start making incremental changes and record what the effects are (that's what being an engineer will do to you).
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