Every single vehicle has boost?!

On my server, this problem arose recently.
Every.
Single.
Vehicle.
Has spammable shift boost. I can get the Sickness Firetruck up to 150mph in reverse.

Yes, I’ve checked in the individual vehicle scripts. The boost section has been completely commented out and/or removed.
I hope this is a stupid question and I get a quick answer, but so far nobody has been able to help me

Please. For the love of God. Save me.