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      02-17-2018, 04:57 AM   #57
horsepower_and_hounds
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Drives: '15 M4 BSM
Join Date: Aug 2012
Location: Charlotte

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Quote:
Originally Posted by 18EM2 View Post
Is the bulge near the top a secondary resonator?

Looks like when the MPE valves are open some exhaust can still flow through the resonator. Is that for drone suppression? Does MPE drone?
The bulge at the top is the mid pipe resonator. And yes the MPE drones without it.... here is the original pic before someone photoshopped it
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'15 M4 BSM DCT CCB, '15 Alfa Romeo 4c coupe "sold", '18 M2 "sold", '15 M4 "totaled", '14 M235 "sold", '09 128i "sold"