Hi I want to increase the boost on 2.8 JTD Ducato motor home, I also to fit a boost gauge. Any body been here and give me any thoughts. Where to take the boost gauge take off would be helpful and a safe boost increase.Thanks.

Don't go increasing the boost,get the vehicle re mapped.
If you just increase the boost,you will have all sorts of problems.
Any diesel I have,I get it remapped just for extra torque and fuel economy.

I'd just leave it be.
It ain't a sports car. It never will be. It's a chugger; just enjoy the scenery, drive slow and use a LOT less fuel.