Hello everyone, I've been a TDI owner for 10+ years now, lurked this forum for a while and tried to learn everything I can so I don't ask stupid questions. My 1999.5 Golf is down right now, injection pump needs resealed and I'm doing a timing belt while I'm in there. She has been my commuter for a while and the 2001 has been the performance focus with a VNT17, PP520's, Malone Stage 4, PD150 intake, etc. Now that I'm driving the souped up Golf a lot more I realize how much I'd like to juice up the 1999.5. Also having two of them lets me work on one while the other is down, so right now is the perfect opportunity to tear into my .5.
With the backstory out of the way, I've read quite a few threads about people converting to OBDII programmable ECU and I'm still confused as to what exactly is required. The direction I'm leaning is to swap the entire harness and ECU from a donor car. My understanding is I will need the ECU, engine harness, body harness (at least parts of it) and the cluster. Some of the other modules are/aren't CANBUS enabled or capable. I read that some supported it and didn't use it, some don't support it and need swapped. What's the actual story? Am I missing something? Do I truly need to swap the entire body harness (basically disassemble the car) or is there somewhere I can draw the line without having a frankenharness?
When it comes to a donor, is there any reason other than the 4 wire glowplug system to go to a 2003? Is there some specific year you would have or avoid? I've read the 2003 has issues too but they can be fixed (like everything).
Thanks
With the backstory out of the way, I've read quite a few threads about people converting to OBDII programmable ECU and I'm still confused as to what exactly is required. The direction I'm leaning is to swap the entire harness and ECU from a donor car. My understanding is I will need the ECU, engine harness, body harness (at least parts of it) and the cluster. Some of the other modules are/aren't CANBUS enabled or capable. I read that some supported it and didn't use it, some don't support it and need swapped. What's the actual story? Am I missing something? Do I truly need to swap the entire body harness (basically disassemble the car) or is there somewhere I can draw the line without having a frankenharness?
When it comes to a donor, is there any reason other than the 4 wire glowplug system to go to a 2003? Is there some specific year you would have or avoid? I've read the 2003 has issues too but they can be fixed (like everything).
Thanks