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Local O'Riely auto parts told me there are two MAPs in my 2010 RR 5.0 HSE: 1-Standard Intermotor Manifold Absolute Pressure Sensor On Manifold (O'Reily P/N AS419) 2- Standard Intermotor Multi-Purpose Sensor on Throttle Body (O'Reily P/N AS420.) Is their info correct? Do I have to replace both...