I have just fitted a turbo boost and oil pressure gauge to my93 WRX import. I have several questions.

1. Normal running oil PSI = 90, Idle = 40 PSI. How do these compare with everyone else ?

2. Boost Gauge - I have connected it to the middle rubber pipe on the inlet manifold, after the throttle linkage - is this OK ?

3. The boost is showing only 0.8 BAR, is this correct for MY93 240PS WRX ? I may be experiencing the milk bottle effect from my dump valve. Could this be the reason for lack of boost pressure ? car seems OK on power !

If I replace the dump valve, is there a specific pressure valve for the Impreza ?