55-65 mph strip on / off
The first graph is with the strip on.  Sunday, traffic fairly heavy. Began at 65 mph, slowed at the 600 sec mark to 50-55 for traffic. Speed was not constant, but where we had to slow to 50-55 the temp ramped up 20-30 degrees. On MY PT, the point where the change of air flow in or out, seems to be around 50 mph. I have a different front fascia and no black strip under the radiator. My temp gauge stays under the 1/2 way all the time. The shape of my frontend may change the speed at which the air flow reverses.  Frankly I am not conerned with that on this test, though it could be used to help, ...  as I plot my approach to a solution.
Though the temps at the turbo and 1/2 way up the firewall are almost the same in both tests, I was impressed with the air temps in the K&N air cleaner. Cooler air is better for power and gas milage.

I am not suggesting ANYONE try this at home, ........  These are professionals in a controlled enviornment!
                                              
                                                            8-21-01    10:00 am, Tues,  Aug. 14

More data will follow after the weekend of;   Aug.  18-19 ....    Thanks,     Bob                                                                
Other areas of the engine bay; behind radiator top & bottom, Origional air intake hole in frame temps, intercooler before and after temps, computer box temps & more.