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      12-16-2019, 05:06 AM   #7
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Drives: 2011 335is
Join Date: Feb 2014
Location: Cape Coral, FL

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Originally Posted by D CHOI View Post
Originally Posted by Osirisman View Post
I have the 5" stepped intercooler and a catless downpipe. I turned off the CEL with the bm3 software when I tuned it.
Just get ready for some heavy burbles and the occasional POP if you go with a catted Downpipe lol
It sounds really good but when in comfort mode it's pretty quiet considering and no burbles.
Yea I have the fabspeed downpipe and I love it. I've been messing around with the burble settings to find what I like best. I also left the exhaust flap OPEN since I've read the OEM setting open/closes based on RPM and load. However I don't really notice much of a difference.
I did the same but also didn't find much of a difference.
D CHOI535.00