Hello everyone. Just had the Aeroforce Interceptor installed along with an oil pressure sensor. I set the slope to 37.5 and the intercept to -18.7 as the instructions say. When I turn the key but not start it, oil pressure reads -1.X for some reason. When I start the engine is reads 60.X initially but then goes down to 30.X after its warmed up but then drops to the high teens. My question is this, do the slope and intercept have to correct values?