I already have a 3 BAR sensor. Do I have to use theirs also?

Seeing conflicting info on their sensor at 3 or 4 BAR.

 

which 3 bar pressure sensor do you have? i dont think you can use non greddy pressure sensor.. it also has to plug into the harness

 

yeah i know about the pig tail harness. It's a plx 3 bar (30 psi) and goes from 0 to 5v.

I've seen in the manual that there is an optional "factory setting" for the pressure sensor but i guess that is tied to engine since we don't have one stock not sure what applies, also I have seen an analog input parameter? I really don't want to get another sensor if i don't need to .