What have you done to your car today?

Nice idea for lumbar support. Also one of my pet peeves of the E85 seats. I've bought a set of OEM E46 lumbar supports and am in the process of installing them.
The system (including the lumbar bags) is the same as on the L322 Range Rover, if it makes finding the loom and switches easier/cheaper! It's where I got mine from when I fitted this to my E46 years ago
 
The system (including the lumbar bags) is the same as on the L322 Range Rover, if it makes finding the loom and switches easier/cheaper! It's where I got mine from when I fitted this to my E46 years ago
They are indeed the same (and for E83, E53 and more I believe). I think in the UK the L322 ones are priced cheaper, whereas on the continent the BMW ones are better priced. I paid 100 eur for the full set for two seats; bags, pumps, hoses, cables, switches.

Just be aware that the 12v feed plug is different between the manual and electric adjustable seats, but a relatively easy swap. About 5 eur for the plugs if you have the patience to wait for an Ali shipment, and 10 eur on Amazon for next day. And you need a 25 eur crimp tool to attach the plugs.
 
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