Originally Posted by
cadillactech
You have an injector that is not flowing correctly during the cold start double pulse injection event.
This is a mechanical/electrical issue with the injector itself, changing the tables in your ECM will not fix it. You need to replace the injector that is misfiring cold, which should show in the freeze frame data. If money is not an object, replace all the injectors as they will all go at some point. Use the nominal flow injectors to keep your trims happy too, don't mix and match.