BMW 3-Series (E90 E92) Forum - View Single Post

xhgwx · 06-05-2013, 12:06 AM

So, I just did a muffler delete on my 335i, first day driving the ECU hadn't adjusted to the mod, so gas mileage seemed horrible, day it's wonderful, 18.8 mpg city only. Sounds great, but it's so loud it shakes something it my carso it rattles. Idk what it is, so is there anyway I could quiet it down some? I'm thinking another set of resonators? Or maybe putting some baffles on it that are open a little at at idle and smooth driving to keep the sound down but once I give it more gas it opens and is loud again?
Anyone have any ideas?

06-05-2013, 12:06 AM	#1
xhgwx New Member 0 Rep 17 Posts Drives: 335i Convert Join Date: May 2013 Location: Oklahoma iTrader: (0)	335i Muffler Delete and some questions So, I just did a muffler delete on my 335i, first day driving the ECU hadn't adjusted to the mod, so gas mileage seemed horrible, day it's wonderful, 18.8 mpg city only. Sounds great, but it's so loud it shakes something it my carso it rattles. Idk what it is, so is there anyway I could quiet it down some? I'm thinking another set of resonators? Or maybe putting some baffles on it that are open a little at at idle and smooth driving to keep the sound down but once I give it more gas it opens and is loud again? Anyone have any ideas?
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