Couple of notes:
1) check your charcoal canister while you are at it, it’s right under the window washing resivor. 8tech on the forum has a great rebuild solution for 30 dollars. I ended up,just putting a new one in.
2) order the replacement
16131182761 from ecs tuning or else where Incase mine is not good. The new model with extra outlet/nipple works just fine but there are two different ways people are capping the extra hole. Do a search and a lot of methods on how members have done it will come up.
3) when you replace the canister charcoal or rebuild it change the tubing that comes in and goes out since they are prone to cracking and make sure you cut it to exact size of original lengths. If bit longer it might fold and restrict the flow. In my opinion it is worth the couple bucks extra cost for bmw Oem Tubes. After marker much lower cost but not as durable
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