imo boost gauge is vgery needed on a mapped car, then you know of any faults instantly! 
except in RedRobins case 
....Exactly! I was going to reply that because my boost leak was relatively slight and because the ECU was compensating for the loss (hence high % requests shown in my data logging), the fault was hardly noticeable on the gauge. It only became
slightly noticeable when I started looking at it
extremely closely.
If you have a
major boost leak/problem and obviously a
major loss of power, then the gauge is extremely useful in identifying the power loss as boost related.
^ I think i better add this to my Troubleshoot thread - Thanks Steve aka Phil
