Hi I'm new to this can any 1 help I've got an ITG to fit on my tdi but I've noticed a little vacuum pipe that goes into original filter housing wot happens with this as videos I've watched of a3 tdi's don't have it after ITG been fitted many thanks
Drill a small hole & fit the pipe it needs to be connected! It's used for feeding & releaving air to the N75 when required, if you dont filter the air it'll take in dirt & over time you'll ****** the N75 & possibly something else.
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