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?

 

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.

 

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

 

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

 

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

 

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

 

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