Thanks to Stueh on the UK Mk3 Forums, this link has surfaced!
http://home.swipnet.se/pelleman/supra/boost_eng.html
Very handy for those of us that like the stock gauge, only wanting a bit more adjustment
http://home.swipnet.se/pelleman/supra/boost_eng.html
Very handy for those of us that like the stock gauge, only wanting a bit more adjustment