ALFISTIS, your experience asked …!

Dear Alfistis, I’ve been driving my 145s for 2 years now and I’ve got 100,600 km on it. So far without any problems, but in the last time the various problems start. ABS ring broken, surrending engine noise, etc. . I’m going to drive my Alfa to the painful end and want to improve it with chip tuning and various. BUT MIGHT DOES IT DOWN? ? What do you think Alfa Romeo’s long-lasting vehicles are and become more attractive with age, or should they be n be rather careful? Technical specifications for my 145er: 145 1.4 Twin Spark BJ 1998 Thank you for your opinion!