M90

[Pitt7542]

Hi there I’ve put an m90 in a landrover 3.9 litre. I’m having a few problems. Can’t seem to register boost. Crankshaft pulley is about 180 mm and standard size pulley on blower. I know it displacement is 3.9 litres and it’s a v8 but surely a v6 with a displacement of 3.8 litres v8 and a standard pulley makes 6 psi. Why am I showing no boost, any help would be helpful Thankyou

 

[Immortality]

Have you connected the vacuum/boost source for the bypass solenoid?