Originally Posted by
CaliberConcepts
I did an LM7 swap which is a 5.3 vortec from a 2003 Silverado into a jeep TJ.
I purchased an Tach Emulator from Novak Adapters which allowed me to connect my tach signal from my P59 ECU to my Crank and Cam inputs on my jeep ECU. In order for the emulator to work correctly I needed to change my VCM Editor view to Advanced in order to view my output setting for the P59 ECU Tach Settings. Once I was in advanced view in the editor I could view and change my tach setting in Engine>General>Tach Output. for me I had to change the High and Low resolution from 3 over 3 to 6 over 6. The pullup type is also listed in the tach output settings.
Hope this helps.