R55 R55 Resonator Eliminator (MCS)
#5
I've installed one on my '07 MCS. The sound is "throatier" with a "brap" to it. Some say it has a sound like an old Austin Healy. I would suggest going to a muffler shop as ultimately that is what I had to do because the ID of the MINISPEED pipe was larger than original pipe OD by more than the clamp could accomodate. I'm guessing having the muffler shop do the job from start to finish will be less than what I spent buying the pipe, installing it myself and then paying a shop to weld the connection points. I like the sound change but cannot say if the performance increased, the car was quick before and after installing the straight pipe.
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