Originally Posted by CombatNinja
The smell is very mild, only noticeable when idling in the garage or sometimes when reversing. Even then it is pretty tame. Worth mentioning because some people have different sensitivities to the smell of gasoline.
I have never experienced any erratic idle with a catless n55 downpipe.
Put in mixes of e85.. Smells sweet.
Current: 2013 335i 6mt msport
BMS Clutch Stop, JB4, Slightly Modified OEM Muffler, ER Downpipe
Past: 2011 335i coupe
369 whp/444 torque. (Procede
, Custom Turboback Exhaust, BMS Intake, ER FMIC)