Seat Ibiza 1.9 TDi BLS PD105 Injector Problem

Hello yesterday i fitted injectors from a PD150 ARL 1.9TDI on my 2009 Seat Ibiza 6J with BLS engine 1.9TDI PD105 EDC17. Everything is well mounted with the proper grips and tuned to 180 º ... the idle is unstable in diagnostic machine the values of group 13 are ok. On the road the car is ok ... if i accelerate to 1200rpms stays fine. I already tried the the car with the original ecu file and it stayed the same. I don't know if the problem is an injectors fail, or some kind of incompatibility, or different tuning .. any suggestions?

Best Regards