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I'll shortly be working on an '88 festiva, carb 1.3L as my first project. I noticed that on the intake hat, there is a tube running to the fender, and a smaller metal tube running up to a valve of some sort, the other end attached to a heat shield on the exhaust manifold. If i force this valve to remain open, is that going to give me intake air that is too hot? Is hot air gonna help that much, and how much will it hurt what power there is? 70 mile per day commute through rural Mississippi.
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