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i just bought a 2017 mustang GT performance pack, and when starting up the car, the vacuum gauge does not move. Any idea on what the issue may be? The oil pressure needle moves, but the vacuum one doesnt.

Good afternoon guys, I have a 2019 mustang GT PP2, I have just a little over 10k miles on it. I don’t drive it in the winter but originally before winter I had a 93 octane tune equipped with a JLT intake, the tune was a JLT revision tune. I switched out the intakes last night to a closed Injen...