a deswirler system for a centrifugal compressor of a gas turbine engine that improves overall engine performance as a result of exhibiting significantly reduced friction losses . the deswirler system generally entails an annular - shaped manifold having an inlet configured to receive radially - outward flowing gas from a diffuser of the compressor , an outlet configured to discharge the gas in an axial downstream direction , and an arcuate passage therebetween . the deswirler system further includes a plurality of deswirler vanes directly within the arcuate passage and closely coupled to the diffuser .