The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  X  0  X  2  1  1  1  1  X  0  X  2  1  1  1  1  X  X  X  0  X  2  1  1  X  X  1  1  X  X  0  2  2  0  X  X  1  1  1  1  X  X  2  2  0  X  X  0  2  X  X  2  2  2  1
 0  X  2 X+2  0 X+2  2  X  0 X+2  2  X  0 X+2  2  X  0 X+2  2  X  0 X+2  2  X X+2  X  X  X  0 X+2  2  X X+2  X  X  X  0  2 X+2  X  0  2 X+2  X  X  X  0  2  0  2 X+2  X X+2  X  X  X  2  2  0  2  0  2 X+2  X  0  2  0  2  2 X+2  X  X  X  0  2  0  2  0  0

generates a code of length 79 over Z4[X]/(X^2+2,2X) who´s minimum homogenous weight is 80.

Homogenous weight enumerator: w(x)=1x^0+3x^80+16x^81+4x^82+8x^83

The gray image is a code over GF(2) with n=316, k=5 and d=160.
This code was found by Heurico 1.16 in 0.258 seconds.