I agree with Allan, that diesels do generally run "lean"; with a oversupply of air. However, there is some advantage to "cold" air intakes, inputting cooler air than the heated air that is present from behind the radiator. Some claims are for a small density increase and some fuel efficiency and horsepower gains.
I have also read of intake vents that are positioned at the windshield/hood interface to take advantage of the higher pressure differential that occurs there. Supposedly, cooler air as well as a small pressure increase is worth some mileage and horsepower gains. The other advantage is that by removing the high pressure air that the aerodynamics of the vehicle improves since the drag coefficient is now lower. Todd Smith '85 300CD 248K (deadlined with vacuum leaks) -----Original Message----- [mailto:[EMAIL PROTECTED] Behalf Of Allan Streib Diesels already run with an oversupply of air, its unlikely that these parts will make even a detectable difference, no way will he get 10 - 15 MPG improvement. Confidentiality Note: The information contained in this message may be privileged and confidential. If this e-mail contains protected health information, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited,except as permitted by law. If you have received this communication in error, please notify the sender immediately by replying to this message and deleting it from your computer. Thank you.
