I respectfully disagree with you about the exhaust heat function of the Fentons not being efficient. My experience has been that it worked quite well and quickly. I even used it on an Edmunds intake with compression fittings on the water tube. I could start it up cold and lay my hand on the intake and have to remove it pretty fast it heated up that quickly. My only concern was that in the heat of the summer it was probably too much heat. Water heat would more likely be superior in that scenario.
