Came across this a while ago muffler delete with twin tip apparently 0 drone on motorway and quiet till you give heavy throttle

The exhaust on my car is a stainless backbox so zero rust and a nice size single bore but as i have a nice twin tip stainless tip here iv been contemplating it but still really undecided if its a case i hate it i could alway put the original backbox on

This is the exact tip i have


And this is what im looking to do bit of wieght saving and some extra noise


Now heres the video its an auto and the camera is directly above the exhaust so extra noisy (take this into account) thoughts please ?

Video of 525i BMW 525i sport, muffler delete sound: http://youtu.be/oA76UC-FxFo

In cabin video BMW E39 530i Muffler Delete Sound: http://youtu.be/37NEZzz2d4g

Be as blunt as you like