on a boosted car boost and fuel pressure are must haves. If someone tells you different they don't like you very much. oil pressure is important but it is not related to supercharging a car.
now oil pressure, water temp and stuff like that are nice to add since the actual gauges in the care are really glorified idiot lights but it starts to get clutered and expensive.
you could also consider a wideband 02 guage.
the truely paranoid person with a supercharger would run wideband 02, fuel pressure, boost. that way any parameter than can truely hurt you is monitored.
I have not decided if I will invest in a wideband 02 or just do the fuel and boost.
one thing to consider if you are anal about looks is the electric gauges usually have a different sweep than mechanical so if you missmatch them they will look a bit different. I will most likely run both electrical just because I am OCD about details and want the same gauges looks wise.
now oil pressure, water temp and stuff like that are nice to add since the actual gauges in the care are really glorified idiot lights but it starts to get clutered and expensive.
you could also consider a wideband 02 guage.
the truely paranoid person with a supercharger would run wideband 02, fuel pressure, boost. that way any parameter than can truely hurt you is monitored.
I have not decided if I will invest in a wideband 02 or just do the fuel and boost.
one thing to consider if you are anal about looks is the electric gauges usually have a different sweep than mechanical so if you missmatch them they will look a bit different. I will most likely run both electrical just because I am OCD about details and want the same gauges looks wise.