I'm not sure which manual you are utilizing.
The fuel pressure regulator, as you saw, does not have a vaccum line connected. So, what you found and put back together is correct.
I'm also not sure what you mean by "noise in the fuel tank". If you replaced the pump, filter (which you don't mention, but is "reguired" to have the warranty on the pump, and which I assumed you did) and pressure regulator, you might look at the ERC solenoid. Could this be causing the problem?
At least you've done all the hard work.
BTW, did you have any error codes before changing the fuel pressure regulator (most often you would have had one if the pump or regualtor needed replacing) and do you have any codes now?