I tried for two months & bought 4 (yes FOUR) cables including BMW Scanner. To get INPA/GT1 working I ended up with the Romanian deal from eBay and even after installing it needed the seller to remote in to get it going.

I strongly suggest you skip to the Romanian deal.

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BMWCCA # 480346

'72 e6Tii rip
'90 e30iC sold