[floydarogers]

Originally Posted by floydarogers

If you search around (I believe in the e90post diesel subforum), you'll note a thread where poster TDIwyse experimented with some cardboard. He's a data nut so was running Torque to monitor temps to make sure nothing bad happened..

It's on bimmerfest: http://www.bimmerfest.com/forums/sho...d.php?t=594801