What fuel pressure should I be set at.... Car seems slow right now

[RedefinedGT]

Ok, I hooked up a BBK Fuel pressure regulator today, set the thing to like 47psi and the car feels slower, is this possible? Could I have too much pressure? I also installed 3.73 gears today, so the car should feel faster right.... lol

 

[DBMSTNG]

if it's causing the injectors to release more fuel than it's supposed to, then yes, it can slow the car down.

 

[RedefinedGT]

I kinda assumed that.... better lower it tomorrow.