Dragging this up from a while back as I forgot all about it until now and you guys were indeed correct,

There was an issue with the bosch sensor so engine was mapped on a 3 bar map sensor, but when I got the engine back I was given both sensors and forgot all about it, so I plugged in the 5 bar hence the wrong scaling,

When I took it back to be set up the other day Tommy spotted the wrong sensor straight away, swapped to the 3 bar and perfect,

Dash display reads 1000mbar when engine off and cars perfect,

So now going to look imo this again to get the reading in psi

Thanks
Marc