Originally Posted by hankit
I have a dumb question, can I actually use the same filter that is used in Gruppe M to replace the stock one in the stock box?
(Before I really dieing to get one of these...but if it acts the same as i just change the same filter along...dam..that s*cks to pay that much if I can do the same for less..)
who's to say the gruppe m filter is better then stock?
i highly doubt it,