Yeah I've got the 60mm BF boost gauge as a stand alone unit but wired to the Defi Control Unit 2.
If you're planning on wanting more than just boost info then I'd definitely recommend the Defi Link System. Buy the Control Unit and you can plug in all sensors so it keeps everything so tidy and easy to install etc
I've got oil temp and pressure sender units wired to the Control Unit. This outputs to the Display Unit (more expensive item from Defi). When I installed the boost gauge all I had to do was to input the sender for boost into the Control Unit and then 'dasiy chain' the display from the Display Unit to the 60mm boost gauge. Simple :thumbs: