Mechanical boost gauge won’t read over 15psi

[bflan2001]

I installed an Autometer mechanical boost gauge last night and it works great up to 15psi and then just stops while the AP keeps climbing to 25psi. It’s a very simple setup so I have no idea what it could be. Possibly a faulty gauge?

 

[TyphoonFiST]

I installed an Autometer mechanical boost gauge last night and it works great up to 15psi and then just stops while the AP keeps climbing to 25psi. It’s a very simple setup so I have no idea what it could be. Possibly a faulty gauge?
View attachment 41406

Why not use the Ap3 as a Boost? Why Add unnecessary clutter to a vehicle that already has a boost gauge? It's an Autometer also. They aren't what they used to be I might add.Where did you set up the line to read the pressure off of? Check and make sure the hose isn't pinched* then make sure the connections are tight like a tiga!tiger!

Sent from my SM-N975U1 using Tapatalk

 

[bflan2001]

I used a boost tap at the factory boost sensor, lines are clear and sealed.

I want an actual sweeping gauge, I prefer it to just reading a number off the AP. Also this will free up a slot for reading more important things on the AP. If I can get it working properly I think the Autometer gauge looks great. 🤷 I got an oil temp gauge as well but I don’t think the sandwich place will fit with my aftermarket radiator.