Changing the Rear Muffler

[x5_43444]

Hello ,


as U know if i am going to install supersprit ( haman ) rear muffler or any other type it will cost me more than 3000 $ . ( at least in my country ).


my friend has just modifyied his rear muffler by his own , he cut the standered one into dual.

The sound is good , and it only cost him 300 $ for minor modifications.


however , i am an owner of an X5 E70 2009 and i would like do the same , just i am little afraid .

what are the effects , ( back pressure ...etc) ...

will it harm my engine if i modyfied my rear muffler ?

keep in mind that myfriend has done this 3 months ago and untill now its perfect.


click here to hear the voice


http://ca.youtube.com/watch?v=Gh3BzmS15Oc


Looking forward to hear from u.