LT5 Misfiring at All Speeds

[XfireZ51]

Originally Posted by Big D

With the schematic/diagram I can trace the circuit inside the ECM to see what controls the injector and if I find that the ECM is causing my problem I can hopefully determine if the internal circuit is replaceable or repairable. W/O the schematic/diagram I haven't a clue.

Just my opinion, but you are quite a few steps from having the ECM as the culprit.