I have F10 528 X drive , it is not the M sport
it has only one muffler on left side
I recently bought M-Tech Fiber carbon lip diffuser
http://www.ebay.com/itm/231041033718...%3AMEBIDX%3AIT
I know have one empty right hole , i can't add new muffler
anyone has any thought how to install Fake muffler tip on right side