I love this, since I first started AC I've not had a proper tachometer and now I finally do! Thanks very much. Please though, add a boost gauge? That in my opinion is the only thing missing.
Open IDAS6hud.py and search the line "ac.glColor4f(0, 0.7, 1, 0.75)"
Change it to "ac.glColor4f(0, 1, 0, 0.75)" and you will get a green gas pedal. ^ ^
http://www.racedepartment.com/downloads/boost-gauge.17575/