E90/E91/E92/E93 (2006 - 2013)
I have a 2009 BMW 335i. Being in California, it isn't easy to get mods that are CARB approved. I was thinking about getting a COBB tune, FMIC, VRSF inlets or BMS dci, a charge pipe, and eventually a new exhaust.
What are the best CARB approved mods I can get for my car? I would love various...