Has anyone just cut out the stock cats and replaced them with straight pipe or resonators. Performance-wise, how would this compare to the other catless x-pipes out there? Are there any disadvantages, is the stock piping diameter less than optimal? Would the sound be similar to stock if two or four resonators were added in addition to the oem resonators, or still quite raspy?
2008 Jerez Black Metallic E93 6MT
K&N Drop In Filter | HPA Pulley | Custom Catless Resonated X-Pipe | BPM Stage II Tune | Megan Racing Exhaust