It's too bad supersprint don't make one for the M104. And a grand to start isn't too bad.
I wouldn't waste my money on that one. I had a supersprint one on my C230 kompressor, it was amazing. A bit of extra low end torque and it made a change in the exhaust sound as well.
They are expensive, but worth it in looks and added performance.
Maybe look for a used one. You never know one may come up!





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