Engine Mgmt., Fuel, Spark, EGTs, & Air/Fuel Ratios
I build 800+ BHP Powerstroke 7.3L Diesels, I have over 10 years exp in engine building and mechanics. From my experience if their is no check engine light illumintating on the dash at key on then you dont have communication with the ECU/ PCM or whatever they call it on the intended vehicle. So I...