Originally posted by Danny:
Are you talking about the plastic/rubber piece that you can easily take off, closest to the windshield?
But a number of people on this BB have removed that WS with no probem of water getting in. They have even gone as far as to raise the rear of the hood (near the windshield) a little for more air circulation. I'd try it but not until I see a pretty good How-To. 
Advice from TH was to not remove that "weatherstripping," as it is crucial to proper airflow through the radiator.
Reason? You want low pressure behind the radiator, and high pressure in front of it, to help push/pull air through the cooling fins. That should make the purpose of the rubber strips above the rad and the little air dam below it pretty obvious, but what about the "WS" up by the cowl? The cowl is a high pressure area. Without the WS there, air will enter the engine bay from the back, raising pressure behind the rad, thus reducing airflow across the rad. Removing the WS or raising the back of the hood for ventilation does not constitute "cowl induction." It just makes your engine run hotter.
