Goal: Build a laptop-based data-acquisition system to diagnose transient rich-running condition on Maserati passenger car with non-OBD fuel-injection system.


Most fuel injected vehicles are easily diagnosed with a "code-scanner" thanks to on-board diagnostics (OBDII). However, this older exotic had no such system.  The problem was particularly difficult to diagnose because it was transient (only occurred during deceleration, when the fuel delivery should be cut off), and because typical problems (leaking injectors, bad O2 sensor, vacuum leaks, bad wiring, etc.) had already been eliminated.  A means was needed to measure what the system was doing during the conditions where the problem occurred.