1.6 AVU / BFQ pre cat lambda replacement - How to ?

Bruggers100

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Hi,

Can't find much info on how to change the Lambda's on the A3. I've ordered a 22mm socket for it so hopefully that will make it easier, but looking at the location in the engine bay it looks awfully tight to get to.

Anyone done this job and got any tips on getting to the Lambda. Do I go underneath the motor or from the top opf the engine bay etc ?