Got it working for the most part.
Image Gallery:
http://imgur.com/a/qhQrICredit - I used information from these guys:
zens - Hex Editing - Earlier Post.
Optimumbox - Setting Up Cheat Engine for RE7 and FOV Values -
http://steamcommunity.com/app/418370/discussions/0/133255957992053921/!!!!!! MAKE A BACKUP OF THE RE7 EXE !!!!!!
What you need:
HxD
Cheat Engine
FileUnsigner
What I did:
-Get Cheat Engine working with RE7-
.5. Used FileUnsigner on all three of the cheat engine .EXEs. (drag the exes onto the extracted FileUnsigner exe(as admin))
-Begin Editing-
1. Hex edited the EXE the way zens said.(added my own hex codes for my custom resolution and aspect ratio) (6020x1080 = D0 5E B2 40 , AB AA 48 42)
2. Started both Cheat Engine and Resident Evil 7.
3. Got to an FPS section in-game. Menu screens will not work.
4. Opened the RE7 process in Cheat Engine (computer symbol with magnifying glass)
-Finding variable in memory- // I consider this one step
5.1. Set FOV to 90 in-game.(which will be seen as "4" in the memory)
5.2. New Scan for the value of "4" in Cheat Engine.
5.3 Set FOV to 85 in-game.(which will be seen as "3" in the memory)
5.4. Next Scan for the value of "3" in Cheat Engine.
5.6. Set FOV to 80 in-game.(which will be seen as "2" in the memory)
5.7. Next Scan for the value of "2" in Cheat Engine.
5.8. Set FOV to 75 in-game.(which will be seen as "1" in the memory)
5.9. Next Scan for the value of "1" in Cheat Engine.
5.10. Set FOV to 70 in-game.(which will be seen as "0" in the memory)
5.11. Next Scan for the value of "0" in Cheat Engine.
-Editing the FOV Value-
6. Right-Click on the first or second address that was found and add it to the Address List. (test both, but you only need one)
7. Change the value from the Address List to the desired FOV value.(Mine was 15)
!!!! The FOV values go like this: (0 = 70 FOV), (1 = 75 FOV), (2 = 80 FOV), (4 = 90 FOV), ... , (14 = 140 FOV) !!! Be careful!
8. DONE!
This was the first time I used Cheat Engine like this, so I am not sure how to make it auto-magically find the FOV variable address at the start of the game.
You will have to repeat Step 5 - 7 each time you start the game.