best engine bay place for a fuel pressure gauge

clementine said

So if i used an isolator, and mounted the regulator on the subframe connector about the passenger door hinge latitude, would that be too far away?

Really, im just gonna mount it on inner fender or just outside radiator with a heat shield and be done with it.

Thanks for all your advice. I'm still listening, but i will pull the trigger as soon as i get more AN fittings

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The issue with mounting it on the fender is you can’t see it.
The issue with mounting it in the cab is you have to use the isolater because a fractured pressure line with fuel in it blowing all over the cab is a huge fire hazard.

Fuel pressure at idle is important, but so it fuel pressure at a cruise and WOT. Of course of you are data logging your fuel pressure then mounting it in the engine bay is fine.