The X100 has a temperature gauge but it is always in the center as it is basically an on/off switch. It will stay in the middle no matter how hot unless it is about to overheat when it goes straight to the red zone. You have a precious few seconds to see it happening and then pull over and stop the engine. That's still better than nothing, which is what we have.

 

I think Steve/WhiteXKR/theJagWrangler has that kit for the X100.
For the X150 you can go the HKS Camp2 route, and get gauges on your infotainment screen. A bit pricey, but it works.

 

Really? I would like that. So it would tie into our infotainment screen? About how much $$?

 

I agree, the infotainment screen is a little slower to respond than I'd like but it doesn't bother me too much. Before I bought my car I had read some complaints about it so I expected it to be on the slower side. I think it's better than I expected. The worst part, as others have said, is turning off the AC. Too many steps! A simple button on the dash would be an improvement. At least it's easy to turn back on. But I am still happy with the infotainment system's look and design overall. And I agree, the design and quality of the interior is fantastic!

 

Right now, about $1000.
The biggest variable is the Camp2 itself. It is no longer made, and there is currently one seller on eBay who is asking $820 (sometimes one will pop up for less, but you need to make sure it contains everything you need, and has an OBD-II interface).
Then you also need a GVIF interface unit to connect between the Camp2 and the infotainment system, which is currently $190 from car-solutions.com.

If you search for 'GVIF' on this forum, you'll find a thread started by 'flyc2c', where he installed such a setup, and I followed his lead.

 

FYI - Just saw that there is a new HKS Camp2 available on eBay now for $600, that includes an IF (interface) unit and boost sensor. This seller is in the US. The guy that normally sells for $820 (he started around $500, but has gotten greedy) ships used units from Japan (usually pulled from vehicles over there).

New HKS CAMP2 with Used I F Unit | eBay