With 86% in MHT CET (PCM) and General category, you can target the following CS/IT colleges in Mumbai:

Top Options (Tough, but try in later rounds/spot round):

TSEC, Bandra

VESIT, Chembur

CRCE, Bandra

K. J. Somaiya, Vidyavihar

Better Chances in:

Shah & Anchor Kutchhi Engineering College

Atharva College of Engineering

Xavier Institute of Engineering

Vidyalankar Institute of Technology