Quote:
Originally Posted by CosmosMpower
Is this basically a resonator delete?
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Effectively yes, but it also merges both banks in to a single 3.5" pipe up until it splits again just before the rear differential.
The advantage of the single pipe is increased exhaust velocity which helps the turbos spool and also provides a torque and HP gain. However, our mid pipe has been extremely popular with the S55 M3/4 customers because it changes the raspy, tinny sound of the S55 and makes the exhaust not much smoother and deeper.