I like my ess tune but I have the akra full evo system / tune. As others have stated, it appears as if you have the stock cats. It should pass smog considering it has the cats. Isn't it legal in ca to alter the mufflers as long as cats are in place? My car is registered in mn so I don't have these concerns.
'08 E90 M3 - Alpine White - Sold
'13 E92 M3 - Silverstone II - Sold
'13 E92 M3 - Alpine White - BBS E88, JRZ, Akrapovic, AP Racing
'04 E46 M3 - Jet Black - BBS E88, KW Clubsports, Brembo BBK, SuperSprint Exhaust, Recaro - FOR SALE