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RE: Drilled Airbox



>My friends are German car enthusiasts (BMW's, Porsche's, VW's, and Audi's), 
>and they are encouraging me to drill big holes in the airbox on my 86 4kcs 
>quattro. My friend did it on an 86 GTI Golf and swears it made a difference 
>in HP, he also installed a K&N (as I will be doing this weekend). 


Drilling holes in the bottom of the airbox obviously increases airflow into
the airbox, but it also is considered an air intake modification for
competition.  You may be penalized if you compete in autocross or other
racing- including being bumped to a class you cannot be competitive in.