Yeah that DISA looks toast. Mine which I think is original was pretty solid when I got my car. I only replaced the big o-ring because it was all worn.
PA Soft wasn't that bad to install. You just need all the right drivers.
One thing to note that I overlooked when installing the software: I was getting a hardware error and it was simply because the computer does not power the OBD connector, the car does. Simple but I wasted 10 minutes trying to figure it out hahaha.
First thing I did, made my side markers light up when lock/unlock the car with the remote.
Good luck.
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