What downpipes would you guys recommend?? I was thinking about either the RMR or Buschur downpipes and a few JDM downpipes like those from Monster Sport, HKS or Fujitsubo. I would use a JDM downpipe but I don't know if they'll remove the cat cause I want to stay legal with a new hi-flow cat. Hopefully some of you guys with JDM downpipes can put your $0.02 in. I was also wondering if it's possible to weld an O2 sensor bung into a titanium exhaust. I was thinking of getting a JIC titanium exhaust but it doesn't have an O2 bung and I want to stay legal.

 

get HKS

 

Go RMR, very nice downpipe.