Since hooking the boost gauge up I haven’t really paid to much attention to boost levels whilst driving (waiting for the right holder from Canada). On the way to work this morning I monitored the levels and it seems to be seeing an initial 16psi before dropping back to 12-13psi. Is this considered normal or would this suggest a possible boost leak? The car has been remapped previous to me buying the car its a '00 1.8T DBW which had a replacement turbo fitted a couple of years ago but looks like a K03-005 and not a K03-029. Bar the remap and a 710N the car is standard.