We claim the ornamental design for a two-stage engine charge air system with branch conduits, as shown and described.
FIG. 1 is a perspective view of a two-stage engine charge air system with branch conduits, where an outline of an engine block and various other engine parts are shown in broken lines;
FIG. 2 is a front plan view of the system of FIG. 1;
FIG. 3 is a rear plan view of the system of FIG. 1;
FIG. 4 is a right-side plan view of the system of FIG. 1;
FIG. 5 is a left-side plan view of the system of FIG. 1;
FIG. 6 is a top view of the system of FIG. 1; and,
FIG. 7 is a bottom view of the system of FIG. 1.
The broken lines shown in the views depict environmental subject matter only and form no part of the claimed design.