hi ive got a dta p8pro and i dont know which injectors it should run . hi or low imp . it has run focus st170 ones for 10months fine but also run bosh 403 grey for 2 years. i cant see a ballast resister so why is it working with both and what damage could /has it done to the ecu im thinking it should run 5ohms or more which i thought was hi imp injector . correct me if im wrong.

 

You should really run high impedance injectors, if it still running ok I don't think you've one ny damage to the injector driver circuit. Low impedance injectors will demand more current.

Get some high in there ASAP,