i am locating a reference for a Hobbs switch to activate my second Walbro fuel pump and was curious where people reference them at? i am aware of the pressure drop after the intercooler and realize post throttle body pressure is "actual" pressure but asthetically i would much prefer it to be referenced on the turbo outlet under the air filter. i know the pump will come on earlier due to the pressure difference between the turbo outlet and TB. i figure its better to come on too early than late. just so we are clear my fuel system is a return style boost referenced.

 

I have a manifold spliced into my brake booster line. My hobbs switch and ati race valve are both sourced from it. I had no issues with fuel getting there in time with the current location.