Mine doesn't do that and has pulled me out the few times I needed it to. Another guy who has the 12,000 lb. one has his compressor running at the same time as the winch....mine runs each of them separately as I imagine it should. Not sure what is going on with the one on POR or with the guy in my club. I couldn't believe his was pumping out air with the winch on...again, mine runs each separately and cannot work at the same time (and why would anyone want them to??)
As far as having a winch/compressor....mine was cheaper than buying a 9.5 ti (which is the winch used with the PowerPlant) and a compressor with that volume separately.