The generator matrix

 1  0  0  0  1  1  1  2  1  1  6  0  2  1  1  4  1  0  1  1  1  0  1  4  1  1  4  6  1  1  1  1  0  2  4  4  6  1  1  6  1  6  2  1  1  0  6  1  6  1  4  0  1  1  4  2  1  4  1  1  1  0  1  6  1  4  1  1  0  1  0  2  1  6  1  2  6  6  6  0  2  1  1  1  1  1  2  1  1  6  1  1  1  6  0  1  1
 0  1  0  0  2  1  3  1  4  7  1  1  4  1  6  1  5  1  6  0  0  1  3  6  0  1  0  0  2  5  5  6  4  0  1  1  1  7  3  2  0  1  1  4  3  2  1  2  6  6  0  1  7  4  1  4  1  1  1  5  1  1  3  4  1  1  6  2  1  6  1  6  6  4  4  1  1  2  1  0  1  3  7  1  2  1  1  0  5  6  4  2  1  1  6  1  0
 0  0  1  0  0  0  0  4  5  5  7  5  1  7  5  0  2  3  5  1  2  4  3  1  6  1  6  1  6  7  0  7  1  2  3  7  4  7  0  1  7  7  4  3  2  1  6  3  1  5  6  1  2  0  2  1  3  7  7  7  6  7  6  0  0  4  7  2  2  2  1  4  4  1  7  5  7  1  1  0  3  7  6  3  2  5  7  1  4  1  2  0  2  6  6  5  4
 0  0  0  1  1  3  6  5  5  7  0  1  7  0  4  6  1  7  2  7  7  3  3  6  2  0  1  5  5  5  0  4  6  1  2  4  3  4  3  7  7  1  6  4  0  7  2  4  0  5  1  1  4  2  7  3  1  3  2  3  7  5  2  1  7  5  5  5  2  0  2  1  6  4  1  3  4  5  3  1  0  0  2  2  2  0  1  3  4  5  6  3  6  5  1  6  4
 0  0  0  0  4  0  0  0  0  0  0  4  4  4  4  4  4  0  0  4  0  4  4  4  4  0  4  4  4  0  4  4  4  4  0  0  0  0  4  4  0  0  4  0  4  0  0  0  0  0  0  0  4  4  4  0  0  4  4  4  0  4  0  0  4  4  4  0  0  0  4  4  0  0  4  4  4  0  0  0  4  0  0  4  0  0  4  4  4  4  0  0  0  4  4  4  0
 0  0  0  0  0  4  0  0  0  0  0  0  0  0  0  0  0  4  4  4  4  4  4  4  4  0  0  4  4  4  4  4  0  4  0  4  4  0  4  0  0  0  0  4  4  0  4  0  4  4  0  4  0  4  0  4  4  4  4  0  0  4  0  0  0  4  0  4  0  4  0  4  0  0  0  4  4  4  0  4  0  0  4  4  0  4  0  0  0  4  4  0  0  4  4  4  0
 0  0  0  0  0  0  4  4  0  4  4  4  0  4  0  4  4  0  4  4  4  0  0  4  4  4  0  4  4  0  0  4  0  4  0  4  4  0  4  4  4  0  0  0  4  4  4  4  0  0  4  4  0  0  4  0  4  4  0  0  0  0  0  4  4  4  0  0  4  0  4  4  4  0  4  4  4  4  0  0  0  4  4  4  4  0  0  0  4  4  0  0  0  0  0  4  4

generates a code of length 97 over Z8 who´s minimum homogenous weight is 86.

Homogenous weight enumerator: w(x)=1x^0+90x^86+342x^87+661x^88+962x^89+1262x^90+1334x^91+1790x^92+1808x^93+2379x^94+2130x^95+2647x^96+2276x^97+2660x^98+2196x^99+2246x^100+1904x^101+1654x^102+1136x^103+1135x^104+726x^105+575x^106+368x^107+193x^108+120x^109+64x^110+40x^111+21x^112+12x^113+19x^114+6x^115+7x^116+1x^118+3x^120

The gray image is a code over GF(2) with n=388, k=15 and d=172.
This code was found by Heurico 1.16 in 56.9 seconds.