Thanks for the support guys
I'll try to have some instructions and PDF with the confirmed coding I did online somewhere tomorrow
@Mith: Technically anything you mod could void warranty. However, if you mod the camera and your engine breaks down, then the mod to the camera would not void your engine's warranty. Also, they need to proof that your mod actually caused the engine to break down if they try to claim that your warranty is void due to a certain mod (of course, where I say mod, you could say code but technically a chance in code is a bit of a mod).
One thing that might be good advice is to keep backups of every chance you make so you can always revert to the last update (or original even) in case something seems to be wrong