Where to get boost signal for gauge

[Coyotemutt]

I had been running my gauge and my hobbs switch for the WI directly off the turbo. I'm now realizing that was probably giving me false high readings at part throttle.

I moved that line to one of the Kadron ported vacuum ports. Now, peak boost on the gauge is still the same but it's apparent to me now that my water meth injection was probably kicking on way earlier than necessary while the engine vacuum was matching the turbo output.

I had just assumed the entire system would see equal pressure.

[kangaboy]

MAP signal should be post throttle plate. This includes boost gauge and BOV.

[Coyotemutt]

Thanks! I guess the simple things just elude me.