it was imported, so dont know.
when it came from japan it had a catback exhaust, with hiflow cat, hks cooler, and had an anodised brake bracket.
i only have a stock gauge. if ur refering to the centre gauges its half way down on the 2nd bottom line..
car has always idled at 900-1000 rpm always.even when i first bought it. no vac leaks either