I bought a vacuum pump for my power brakes because of the performance cam i have in a 350 chevy small block. I have installed everything and the pump is in place, just need to run the hoses.

There are 2 options on the directions. One is leaving the exhaust port open with no line attached to it and then running a hose from the intake vacuum from engine and teeing up with vacuum pump vacuum port and running to the brake booster.

The other option is running a line straight from the vacuum pump port to the brake booster, and a line from the exhaust port to the intake vacuum on the engine.

I havent been able to find much info on this. What are the differences in the 2 options?

Should i have a hose runnning from the exhaust port to the intake vacuum or just have a line going from the vacuum to the vacuum pump and then to the brake booster