Apexi afc neo weird pressure guage

[migoreng]

got this installed a few months ago...
recently i noticed it's been acting weird.

sometimes when i turn the key to on but leave the engine off the pressure guage will jump around -5kpa to 0 rapidly...normally it should be sitting at 0kpa

when i WOT half the time the guage doesn't go to 0...it will max out around around -5kpa.

all other times the guage appears to be normal...it idles around -75 to -78kpa...guage is around -60 to -70 when cruising

any ideas? could my map sensor be on its way out?

[CRXer]

dont know whether uve ever noticed this before,but atmospheric pressure aint constant,even at sea level,so dont expect to have your gauge set to read atmospheric & see a constant 0kPa all the time.

if its really jumpy & inconsistent in those last little 5kPa then u could just have a poor wiring joint or poor ground somewhere.

if car runs fine,then dont worry about it,just see if u can set it to absolute pressure & be done with it.

[migoreng]

car runs fine.fuel consumption is good too, around 9L/100km average. maybe my injectors need an ultrasonic clean or engine needs a carbon clean as i notice response issues sometimes...

it's just odd how the pressure sometimes flickers between -5 and 0kpa with the engine off. other times when i turn on the AFC it sits on 0kpa no problems