hi yuh, you like yuh gun then
right, you cant use the radar, dont realy see how that will show you lpr pressure
the only way is to get a low pressure guage and attach it to some hose, then take off the hose on the lpr and attach the guage, then gass the gun up.
on the Evo LPR opperating pressure is about 45-100 psi, depending on hwere the twister nob is, winding out ( anti-clockwise) goes UP in pressure, and winding in goes Down
hope this helps