Technically this wouldn't be legal either as the cats wouldn't be in the stock location.
Originally Posted by sbcrazy
If I used o2 Sims I would put cats downstream past the headers. The cats would have quick releases on them so I could put them on for smog and take them off after.
04 IR 330i ZHP | ESS TS2+ SC | MagnaFlow "headers" | KMS 3.64 LSD | AST 4100 550/650| APEX ARC-8 18x9 | H&R front sway bar | Vorshlag camber plates, RTAB limiters | TMS subframe & swaybar reinforcements | UUC SSK & DSSR | UUC TM & TME | BW motor mounts | Dinan strut & shock tower bars | vaio 4-bolt oil pump