yes i had the PLX-DM100 or 200 cant remember but it would monitor 4 diffrent things at 1 time..it was nice...you have to buy every module to go with the plx unit in order for it to monitor that certain thing.

 

im running the dm 100 with wide band, works great. i need to mess with it again one day and set up all the settings. im gunna be running there fuel, and boost gage

 

Here's mine, finally installed the boost gauge. From TTS, about $30. (I can take a better picture if you want)

 

Here are mine, wideband in the cluster, boost controller/gauge where the 4WD switches usually go.

 

thats what ive got, im acutally working on a triple cluster that will mount on top of sterring column though

 

 

So Cal diesel makes a nice two pod that goes in the over head sunglasses holder

 

Basic boost.

 

I have one in my escalade. It is hard to think of anything it does not list, and two items at once like you said. so definitely a lot of information literally at your fingertips if you want it.

One place for gauges not shown yet was in the middle console, with a flip up cover for stealth. I had this in my 2003 Denali that I sold a couple of years ago. It was where the ashtray was I believe (sorry don't have pics). I have the gauges in my 2007 where the programmable buttons are for the garage remote, and find them distracting at night.

Pillar pod on escalade likely least favorite for reasons listed - lack of stealth and can't work sun visor very well.