  With full data set that corresponds to an integrated luminosity of 9.4
fb$^{-1}$, CDF has updated the top quark forward-backward asymmetry (FBA) as
functions of rapidity difference $|\Delta y|$ and $t\bar t$ invariant mass
$M_{t\bar t}$. Beside the sustained inconsistency between experiments and
standard model (SM) predictions at large $|\Delta y|$ and $M_{t\bar t}$, an
unexpected large first Legendre moment with $a_1= 0.39\pm 0.108 $ is found. In
order to solve the large top FBA, we study the contributions of color triplet
scalar and color octet vector boson. We find that the top FBA at $|\Delta y|
>1$ and $M_{t\bar t} > 450$ GeV in triplet and octet model could be enhanced to
be around 30% and 20%, whereas the first Legendre moment is $a^{\bf Di}_1=
0.38$ and $a^{\bf Axi}_1= 0.23$, respectively.
