doesnt sound like a complete bolt on. you need the connecting pipes with the muffler for it to be a bolt on. cutting your OEM connecting pipe means you will need to weld them to the muffler, same goes for the x-pipe just and x-pipe without the primary cat delete will need some cutting and welding. having just and x-pipe without a primary cat delete usually doesnt cause a CEL.
ESS V2 Tune | Challenge sport x-pipe | Akrapovic Slip-On | Stoptech BBK (380/355) | Dinan Intake | Evosport pulley| Vorsteiner | Downforce USA | Gintani | UUC | BMW Performance | Macht Schnell | Forgestar F14's SDC 19x9.5F 19x11R | 255.35 295.30