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Old 08-01-2018, 09:36 AM   #75 (permalink)
ratgreen
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Join Date: Jan 2017
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Why complicate things. Just get an EGR cooler that has the valve built in. Then you just need a 12v vacuum pump to activate (based on the temperature sensing relay) to keep it open to let hot exhaust through during warmup. Then close it once up to temperature to stop it boiling the coolant in the egr cooler.
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