Look at me trying to work out all the conversions first Km to Miles now Psi to Bar Right fianlly had my Boost guage fitted read otu is in Psi thought standar boost should be running around the 10psi mark mine ehtier seems to be over boostign or the gauge is inaccurate. The gaug is wired to the manifold i belive and reads 18psi in fith gear foot flat to the floor and in all other gears reads a staedy 15psi Want to no what bar ratign that is pelase :-D tried googlign it but had no luck