K/N ATR FILTER

[havoc]

time to get rid of stock air filter, with the K/N i  hear you get and extra 2-3 hp, but curious to know how much more sound with more air flow entering do  you get.
ps
i just have the RS3 race slip -ons  installed

 

[MET]

1 1/2-2hp gain maybe. Little tune may get you more. I think that a BMC airfilter is a little better. Flows faster.

 

[Doc_Busa]

Yes, get the BMC race, I heard the K&N can cause power losses as the stock flows better....

 

[havoc]

while at it, i thinking about a small air box mod too.