FYI this is a 135i I think. And that may make a difference I dunno as I'm not sure what the cats look like on a 135i.
'08 E90 335i 6MT. VM 6466g2 kit. Stage3+ Fuel-It with FPR return, BMS PI injection, widebody
'09 Z4 sDrive35i DCT, MHD Backend flash, JB4, DCI