Sensors needed on track?

When you remove your head light mask, you have to unplug several connectors. I took some pics from three "sensors" and I'm curious what they are and if these are needed on track or can be not used?







Who knows?

I put the race mask on mine and unplugged the main wiring loom, I kept the rev counter and speedo on as I had adapted the race mask. (no issues what so ever)

Are you running i with the speedo/rev counter still connected?

Does it start up with what you have done?

The bit with the rubber hose on it is the outside air pressure sensor. The ECU needs this to adjust fuel.... best leave that in
Not sure about the rest haven't had a decent look at it.