DIFFICULTY STARTING/RESTARTING VEHICLE, SLUGGISH. NOT ABLE TO BRING VEHICLE TO IMMEDIATE STOP AT 35-40 MPH. DIFFICULTY USING BRAKES TO CONTROL VEHICLE/STOPPING. DAMAGED BUMPER IN EFFORT TO STOP AGAINST THE CEMENT CURB. ELECTRONIC THROTTLE SYSTEM SOFTWARE UPGRADE; EJECTOR AND HOSE CLAMP REPLACED. *JB