  We present the discoveries of two of AM CVn systems, Gaia14aae and
SDSS~J080449.49+161624.8, which show X-ray pulsations at their orbital periods,
indicative of magnetically collimated accretion. Both also show indications of
higher rates of mass transfer relative to the expectations from binary
evolution driven purely by gravitational radiation, based on existing optical
data for Gaia14aae, which show a hotter white dwarf temperature than expected
from standard evolutionary models, and X-ray data for SDSS~J080449.49+161624.8
which show a luminosity 10-100 times higher than those for other AM~CVn at
similar orbital periods. The higher mass transfer rates could be driven by
magnetic braking from the disk wind interacting with the magnetosphere of the
tidally locked accretor. We discuss implications of this additional angular
momentum transport mechanism for evolution and gravitational wave detectability
of AM CVn objects.
