Manifold pressure Regulation
Manifold pressure means absolute pressure as measured at the appropriate point in the induction system and usually expressed in inches of mercury.
Also defined in 2 more sources
The absolute pressure of the air in the induction system of a reciprocating engine.
Guidance: Aviation Maintenance Technician Handbook — Airframe, p. G-22
The absolute pressure of the air inside the induction system of a reciprocating engine.
Guidance: Aviation Maintenance Technician Handbook — Powerplant, p. G-17
Taught in PP-D Procedures, PP-D Concepts, PP-D Quick reference, PP-J Concepts, PP-A Concepts, PP-C Procedures.