Thanks for the replies, it is the one with the manual adjustment, made for 1JZ and 2JZ. When i first checked it, it was on about 5.06V, came like this from Japan. The lowest it goes is 4.5V. At 4.8V with boost controller on max im only getting about 8.5 PSI of boost. I have a 3 inch turbo back exhaust, aftermarket HKS turbo's, M/T. It's really strange, i cannot get it to boost above factory.