  We study Chiral Based Electromagnetically Induced Transparency (CBEIT) of a
light pulse and its associated subluminal and superluminal behavior through a
cold and a hot medium of 4-level \textit{double-Lambda type} atomic system. The
dynamical behavior of this chiral based system is temperature dependent. The
magnetic field based chirality and dispersion is always opposite as compared
with the electric field ones. Contrastingly, the response of the chiral effect
along with the incoherence Doppler broadening mechanism enhances the
superluminal behavior as compared with its traditional degrading effect.
Nevertheless, the intensity of a coupled microwave field destroys the coherence
of the medium and degrade superluminality and subluminality of the sysmtem. The
undistorted retrieved pulse from a hot chiral medium delays by $896 ns$ than
from a cold chiral medium under same set of parameters. Nevertheless, it
advances by $-31n s$ in the cold chiral medium when a suitably different
spectroscopic parameters are selected. The corresponding group index of the
medium and the time delay/advance, are studied and analyzed explicitly [Note: A
revise version is under preparation

Quantum Physics;Optics