[EcoCivic]

I am thinking about building a "coolant warmer" to warm up the engine more quickly. My idea is to transfer heat from the exhaust header to the coolant until the engine warms up. One way I thought of to do this is to wrap copper pipe around the tubes on the exhaust header and run coolant through it. I would install a valve so I could allow or block coolant flow for winter or summer. Warming the engine up quicker could only help its efficiency and longevity. What do you think about this idea?