Originally Posted by ProPilot04

Wires that have ANY damage need to be replaced.

TBPH, my Evo is garaged, and I haven't run any wires through that hole in about 2 years, but I'd think there would be enough slack in the harness to allow you to not have to play that game. In fact, I'm almost certain that there's enough slack to at least move it around because the motor moves independent of the chassis.

If you need to remove the dash, it will almost certainly make the actual job easier, but removing any dash is no picnic. So go that route only if you must.

Once you get the grommet out, you should have a better idea of what you're looking at in terms of damage.

For future reference... if you ever need to run something through one of these firewall ports, your best bet is to use a stiff object (knitting needle, paperclip, etc) to force through the grommet space, and fish wires through.

Originally Posted by Shortbus115

This won't help you now but why did you drill on the passenger side? There is an empty grommet right there. I just popped it out with a ratchet extension and ran my boost gauge harness through the hole. Then drill and cut the grommet to fit around the harness and pop it back in.