Injectors question

[PattheCat]

Hi all,

My 325 has ran rich since I bought it (exhaust stinks of fuel, black exhaust tips after short use, can bog down under acceleration). I believe that someone before me has "upgraded" the injectors, can anyone confirm with the picture below? I believe these are M50/M52 injectors?

Code on injector 280150415

Cheers
Pat

[twenty]

Correct. The stock 325i are 0280150715 .
M50 injectors should be fine really, I'd start with making sure they are not dud and have been refurbished.