Still sounds injector related. Where are the recon ones from, as not all recon'd injectors are what they say they are? Ebay 'specials' are notorious for being hit and miss. The ECM will 'learn' to some degree, but good injectors will fire and run cleanly from the moment they're fitted (speaking from personal experience).

You could try and do a leak-off test to see if the injectors 'pass'. Although not conclusive it's the simplest and cheapest way of checking them without resorting to yet more money and aggro sending them off to be properly tested.