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Although the CMax dash display provides lots of information in the left side, I always want more. I had considered a “Scangauge 2” but being a frugal senior citizen, I went the $40 route. My first purchase was a “ELM 327" Wi-Fi OBD2 ( OBDII ) adapter from Amazon, $15. I chose Wi-Fi instead of Bluetooth because I had planned to use my Android phone and the Nook tablet has no Bluetooth. The phone can not connect to the car’s hands free and a Bluetooth OBD2 adapter at the same time. Next I purchased “Torque Pro” from Google Play for $5. I think this is not available for Apple iOS. For a display I used an old B&N Nook Color 7” tablet my wife had abandoned in favor of an iPad. I used “AndroidForNook” from Amazon for $20. This allows dual-boot, Nook or Android. Torque requires the Android operating system. The seven inch display allows me to setup 17 displays on the screen. All 17 displays update at an acceptable rate (within seconds). Most of the displays are included with Torque Pro. The CMax specific PIDs/Sensors were found on this forum and others. I am still working on the custom PIDs. The “HV Amps” display in the top row has an error in the equation. It shows the correct amps during discharge but shows bad info while charging or regen. The “HV Amps” in the middle row seems to work better. This equation shows a negative number during regen but requires more testing for accuracy. This photo was taken while parked with the Internal Combustion Engine (ICE) running. “SoC” is state of charge of the lithium battery. I am not sure about “Absolute Load” and “Load”. Cat B1S1 is the temperature of the catalytic converter. I will be using “Timing Adv”ance to compare the performance of Regular v. Premium gas.