Jaq:
The P-47D had three exhaust outlets:
No. 1: Turbocharger - large rounded outlet in front of the tail wheel.
No. 2 & 3: Behind the lower engine cowl on both left and right sides is an oil cooler outlet, followed by a deflector plate, followed by an exhaust port. The left and right exhaust ports had butterfly valves that metered the amount of exhaust gas that went to the turbocharger.
Jim
Most of us are acquainted with at least one "know-it-all". He may be as close as the mirror. [}:)]