Thread: 35is exhaust
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      04-04-2021, 05:44 PM   #2
StLMO
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Drives: 2003 M5, 2015 Z4 35is
Join Date: Mar 2011
Location: St. Louis, MO

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2017 BMW 540i  [0.00]
2003 BMW M5  [0.00]
2015 BMW Z4 35is  [0.00]
I can't comment on mufflers but I did install catted at design downpipes on my 2015 35is, but retained the secondary cats. Tone was deeper and I'd say 15% louder....not in an obnoxious way. Never threw CELs but we don't have emissions where I'm at.

I had a Remus axle back on a f30 335 with the n55 and it was a bit too raspy for me. Sorry, no experience with the eisenmann.
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