Ok, so I have a strange issue...
I have a HDi SBC-D-EVOLUTION bought it brand new from HDi earlier this year, when I had this installed I took the car to the dyno just to set it up and do some runs.
I found that the controller / gauge is reading 18.5 psi...and the dyno printout is reading 9psi. so the HDi is reading what seems to be double!
So I have installed a autometre mechanical gauge in and yep, I only get 9psi.
Now ive spoken to HDi and tried everything they have asked, ive had it re wired several times,moved the vac lines used "specific" VAC lines also. so after ive done all this still no good...
last week i sent it away to HDi and they have tested it and told me that the gauge and the controller are working 100% perfect and to check my wiring as it must be that...I had it reinstalled again on the weekend and its still reading double the boost!!
Has anyone had this sort of issue?? how the hell can it read double the boost!