where did you guys string the gauge tubing through the firewall?

 

I did it the easiest way, i stuck a metal snake threw a grommet in the firewall. The gromit looks like its put there incase you need to run any wires or anything threw the firewall. You dont need to use a snake all you need is a hanger . You will fine this when you take the knee bolster off on the drivers side.

 

cool thanks... which part of the knee bolster?

 

just the one underneeth on the drivers side. If i rember correct i think its 5 or 6 screw, i dont rember exacly but its super easy to pull off.

 

Pictures included
http://www.awe-tuning.com/media/pdf/...gauge_A4S4.pdf

 

where are you mounting the guage