Hi everyone
I need advice about boost gauge.
I got podi dual gauge which boost and water.oil temp
I got installed both gauge and temp gauge is working well but I got problems boost one.
before engine start boost gauge is fine but after engine start boost gauge bar graph won't shown...only i can see PSI marks...
but not every time,sometimes fine sometimes not...
I think wiring is fine becouse not DIY and shop checked double times, and I don't think podi gauge has problem becouse before engine start work well...
then I think my car has some electronic problem??? maybe battery???
so I want someone advice me about what is problem with that??? and battery or something electronic issue makes that kind of problem???
podi and shop, they said this is wired and they don't have any idea what is going on...

anyone Please help me out !!!