Used one of those small 9v batteries to make the injectors click open. Dunno if that's enough voltage (consensus is apparently 12v) but it seemed to work very well. I was able to spray carb cleaner both ways thru them & let some soak on the inside for 5-10 mins in between on each 1 then finished it all off with compressed air to blow all the carb cleaner & hopefully mixed up crud out. Mpgs DEF greatly improved between the 2 sets of injectors: 1 ones from the engine swap that probably sat around a junk yard for some time vs. the original injectors set that came with the car. I was gauging about 22-23 city mpgs at night in some stop & go traffic in about 80* weather. Good stuff... LTFTs seems to have dropped & normalized as well. After the custom tune it was still >+5. Now it hovers around 0 with a little normal deviation each way. Perhaps 1 was clogged or not flowing right & the PCM was overcompensating w extra fuel on the others or something. Runs VERY well now. Thanks, guys.