i went into the wiring loom just nicked a lil hole and pushed the pipe through.
wiring the gauage up i used the live from the headlight switch inside the car and earthed to one of the 13mm nuts next to the fuse box took roughly 30mins to do also the tee picece i bought from awesome the new south anti buzz was no good poor flow and giving minimal boost preasure so used the one with the pack which was a anti buzz one and that work perfect.
what psi are people pushing standard ive got 10psi wouldnt have anything to do a with a fmic its the only thing i can think off or if the car has been tinkered with before i got it its not had a map as im sure it would put more psi than that on