hi guys ive got a idrift boost/vac gauge and ive installed it for more than 5 months now, i started to get this problem where on idle my revs have dropped to abt 600rpm and on the gauge its about 10 - 20 sitting on the vacuum side... when the car is fully turned off its not even sitting on zero, so im not sure what i can do but im thinking of replacing the intercooler pipes, oil service change if it still doesnt stop with shit idle im gonna go RE customs ask my mate to do it for me....