trunks1001

Does anyone know where in a '00 civic si do i put the vacuum line through the firewall ? What i mean is what opening can i use to feed the vac line through from the inside of the car to the engine bay so i can connect my boost gauge?

yellow blur

There should be a grommet on the firewall that you can just pull out. Black plastic grommet to feed your vac line through, mech boost gauge i assume.

trunks1001

there was one next to the clutch a black grommet but when i put the line through it didn't go anywhere it just got stuck

yellow blur

Get a flaslight down in there and see if you can see light coming through. If not keep looking, my integ had one just chilling on the firewall and I used that. Good luck.

Ed

trunks1001

thanks for the reply, which black grommet are you talking about????? I'm still not able to find it. Anyone else know????

inspyral

In my 6g, there's a black grommet with a cluster of wires right next to the clutch cylinder on the firewall. I use it for all my wire/vac pass-throughs

Ri5e

Or you can drill a small hole right on top of the Big black grommet on the drivers side.