hopefully someone maybe able to help me with a problem that has started recently

when i turn the ignition on and go to start the car the boost gauge on apexi power fc hand commander shows that the car is in negative boost but when you rev it the boost stays the same no rise just slowly the numbers on the fc commander get higher until they reach -750ish and then the gauge reads - - - -.

if it has a good moment all is well and the boost rises and falls as it should

tried a boost solonoid off a mates car that i know works no joy

any electrical gurus on here wanna help me ,it would be most welcome ,

getting really pissed off with it at the moment and no money to sort the thing ( joiner layed off work)

if i can get it sorted just gonna strip it

car is a 98 uk terzo

when it happens car starts then cuts out and wont run

 

sorry mate only trouble i've had with mine was screen not working at all due to it getting
too hot in the sun inside the car.