i know it measures like 19 different parameters but how do you know which one is displayed?

 

one thing:before you buy it make sure you have the AEM EMS 1.19v...im running the AEM EMS 1.11v and it doesnt work..ONLY WORKS WITH 1.19V!!You can have your 1.11 upgraded to a 1.19,steps are online if you want to do it yourself.

but mine will say H20-and then read the temp,then PSI-and display number,etc etc.i only have like 6 that pop up,but dont read correctly.if i had 1.19 it would read fine