Quote:
Originally Posted by ILSMKU
That sucks. Ive got a M5 and it made a pretty big difference. But you're saying the 550 wont be that noticeable?
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550i muffler is really restricted. If you look inside the can it has some loops to klll the sound versus the M5 which is almost straight through.
Never did test it on the OEM 550 cans though.
The left is the M5 and the right is the 550