How do I figure out my fuel pressure or are they all the same

 

Do you need to know what fuel pressure you should have (spec) or do you want to know how to test for fuel pressure?

Either way I'm sure a quick search in the appropriate section would probably answer this.

 

If you need find the pressure your car is running at you need to buy or borrow a gage and it will tell you exactly.

If you are setting up a basic nitrous system you should be safe going with stock pressure and I think that is 52 psi.? A quick search will confirm that.