Sorry guys, I tried the search but couldn't really find what I was looking for. Has anyone run 0 guage power wire through the firewall? I saw the posts about running power wire through the rubber grommet behind the PCM but I wasn't sure if you can get 0 guage through there.

 

not a problem at all, ive had 2x 4ga through there a nitrous line and other stuff in a buddys car, 0 gauge will fit fine

 

Yeah , no problem!
I have 1 run of 0 gauge, and 1 run of 4 guage going through there.

 

Awesome, thanks guys.