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I wondered if anyone can help. I've just fitted phase 3.5 to my cav and am wondering what the boost gauge should be reading at each point on the 5 position switch.
 

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3.5

Stage 5 should hold about 19 psi with 22.5psi overboost.
As the instructions state. On the phase 3 it should be about 8-10psi about standard and the rest somewhere in between.
3 and 3.5 can be much different!
cheers Craig
Russ might have better information on 3.5.
 

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Lou - where did you get your kit from?
 
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