so I bought a VAG KKL USB adapter and it came with drivers. I see the TuneECU site has drivers on their as well. Which should I use? I know not to let W10 install it's own drivers.
Sorry, I"ve been trying to follow the instructions in this pinned thread: TuneECU -- HOW TO but most of the links are dead. I bought a cable off of ebay based off of this post: Is this the right OBD cable?
I'm not sure what other info you might need. I've got a Windows 10 laptop and I"m trying to connect to my Rocket with TuneECU using the cable I bought.
We're dealing with technology here, and if you notice, that thread started in 2010 (!) when the whole computer landscape was different.
For electronics (and parts availability) I recommend always starting at the last post in a thread and working backwards.
Working that way, you would have discovered a post from 2018 by @mully95 where he captured the proper cable: LonElec UK
And you may be aware that support for the free version (laptop/notebook) of TuneECU ceased some years ago, though many of us are still using it. The supported version is available for Android, and cost $12 several years ago in PlayStore - and you need to decide which version you are using FIRST - and THEN purchase your cable, because if you look on the LonElec site, you'll see they have a number of different adapters depending on the type mobile device you're using, more specifically what kind of external USB connection is fitted.
I do need to clean up that thread, or put another one in its place as a "how-to" sticky.