whonxt?

I have this DTC 33 MAP Sensor High code I found when scanning the car.
I tried to search and could only find that it's the map sensor signal voltage.

I have the CC503 cam and full emissions. Car has low vacuum for the brakes sometimes at idle. I believe my connector is not in bad shape. Maybe it's just low vacuum from the cam? I thought the 503 cam was pretty tame though.

Car seems to run fine, just wondering if this is something to just live with, or something to try and fix if its hurting the performance?

Any ideas? Thx!!