temperature

High exhaust temps since day one. Right side panel now has a hole in it. Reverse actuator melted stuck. I've added side and rear panel venting, wrapped header from engine to exhaust flange. Today I discovered the wrap was burnt to pieces and the fuel tank had started melting. Exhaust does rumble...

I know that it is possible to view the coolant temperature within the diagnostics mode display. I'm just curious if there is a way to keep that information actively displayed while having the tach and speedo displayed. I'm wondering if anyone has tampered with the gauge/ecu?