SUBARU: ENGINE CONTROL MODULE (ECM)REPROGRAMMING. UNDER CERTAIN UNIQUE DRIVING PATTERNS, SUCH AS REPEATED ACCELERATION AND DECELERATION AND/OR CONTINUOUS UPHILL DRIVING AT HIGHER SPEEDS (ABOUT 75MPH), THE CATALYTIC CONVERTERS OF AFFECTED VEHICLES MAY DEVELOP HIGH INTERNAL TEMPERATURES THAT EXCEED DESIGN PARAMETERS. IF LEFT UNCORRECTED, THIS CONDITION MAY EVENTUALLY DEGRADE THE EFFICIENCY OF THE CATALYTIC CONVERTERS. CSC LETTER WAS REC'D. *PE
