okays guys i visited adil zafar motors a couple of days ago i had my car checked with a tech 2 device they had it looked like this this is not apic from there i got this from the internet
it was showing readings for RPM ,Temp and all the sensors he was also checking error codes with what i want to ask is that is there any sort of thing which i can plug into that port which will show RPM and Temp reading on an lcd or any sort of display device