ZR-1 Net Registry Forums - View Single Post

XfireZ51 · 01-17-2015

The ECM needs a signal from the Differential MAP sensor telling it there's enough vacuum. Originally I had done that with a resistor connector plugged into the harness at the sensor. But Marc and Pete discovered a change to the calibration that would always allow secondaries to operate just keeping the Harness connected to the sensor. No need for vacuum.

01-17-2015	#6
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,685	Re: help still have secodary problems The ECM needs a signal from the Differential MAP sensor telling it there's enough vacuum. Originally I had done that with a resistor connector plugged into the harness at the sensor. But Marc and Pete discovered a change to the calibration that would always allow secondaries to operate just keeping the Harness connected to the sensor. No need for vacuum.