To see just how crap the original land rover one isDisco or Defender engine? And why do you want two gauges?
To see just how crap the original land rover one is
Because the standard deviation is less susceptible to extreme values compared to the meanWhy don't you fit five. Four for comparison and one that shows the mean of the others. That should sort it.
Thanks for ya advice, my raptor dash came this morning, all fitted along with the side trims and new binnacle shroud as the old one was broke, think I will go for turbo boost, egt , water temp and voltage,I went for volts, oil pressure, boost as below on the Raptor dash. Gauges are Chinese "Dragon Gauges" from eBay but do the job. Ignore the readings on the oil press and boost, the sensors were not wired in at the time.
Normal dash is speedo, oil temp & water temp, fuel, clock
You will probably need two thread converters plus the sender unit itself for the thermostat housing, Durite, available from Steve Parker. You'll also need a T piece if you want oil temp and pressure.