I'm installing a Zex nitrous adapter onto the fuel pressure?

What is the best (easiest) way to relieve fuel pressure prior to doing this?

Thanks

http://www.cj-motorsports.com/342install.htm

Part 2

I had to do that to bring my fuel pressure down
but I also have a fuel pressure regulator to make adjustment

Thanks.

I just got a copy of the G35 service manual as well and it says to simply remove the fuel pump fuse located in the IPDM E/R (fusebox by battery), and then just start the engine and run until it stalls. Then crank a few more times to release all fuel pressure.

^^^ that, and also unscrew the gas cap.

why?

my bad I thought you were asking about relieving pressure on the long run not just one time thing.

I had my gas tank exposed so I just disconnected the harness going to the pump

If you have Uprev Cipher it has a function to do this via the ecu.