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Ideal iat
The truck is a 24v 2nd gen dodge diesel. It has an iat sensor that tells the computer to retard the injection timing if the air is too cool. Retarding the timing gives you a big hit on economy. Without the computer intervention, I would think the engine would be more efficient with air as cold as possible. Cold dense air hurts economy from an aerodynamic standpoint, but cold dense air should make the engine more efficient. Someone help me understand this better. Alot of people want to warm the air going in, I want to cool it as the turbo heats it up by compressing it.
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