Hole size for sensor

[ILoveAudi]

Doing the diy intake on my car and I need to know what size bit to use to give the sensor a snug fit. Thanks!

 

[Scottydoggs]

what i did was to stick the drill side ( the smooth side) of my drill bits into the stock air tube ait sensor hole till i found one that was the right size.

then once it was painted and dry i used a small bead of gorilla glue to secure it in the pipe. rtv would also work. use a smal amount as you dont want to see it.

 

[ILoveAudi]

Thanks!