Air/Throttle Boot

[link1433]

I had a question regarding the air boot that runs from the MAF to the throttle body.  I replaced this boot and noticed that it has two holes, one on the side and one beneath.  I check the vacuum diagram and noticed only one vacuum line running from it.  So my question is, what is the other hole for, where does it go. Thanks

[swiss318is]

yes, thats right, there are two holes.. one is unnecessary and dont go anywhere and you close it with a plug! this plug is included in the set if you buy the boot by your bmw dealer.

[link1433]

Thanks, its been awhile since I last had it put together.

[wheelsIII]

Thank you! Thank you! Thank you!

I've spent at least 12 hours trying to figure out where the !@#$%^& hole got connected to! I bought my new throttle boot from BavAuto and they didn't include the plug.

I assume that the vacuum side of the second 4-way connector isn't used either then? I ran the ICV connection directly to the other hole in the boot rather than through the 4-way. Hope the smog guy passes it.

Did I say thanks?  It's been 2 years since I starrted on the project (I have one of the few M42's with a rod through the block) and I kind of forgot where everything went.

Tom


:cool: