So I installed some Berk HFCs that I bought from someone here and heard weird noises coming from them so I decided to replace them with Megan Resonated Test Pipes. I paired them with a Fast Intentions catback. I'm having issues with both.

#1 - I have a SES light from the test pipes but since they have the built-in non-foulers there is no room to install real non-foulers. I believe the light is triggered because the o2 sensors are still getting too much exhaust. I know they are spaced but the hole is too large. Has anyone else witnessed this?

#2 - I was about 80% done my Fast Intentions catback install when I realized I had 4WAS. FML So of course the right muffler does not fit correctly. I was able to force it to fit but it's resting on the metal piece where the 4WAS system is. Does FI make an exhaust that fits 4WAS or is there any workaround for this?


I think the noise that was coming from the Berks was due to a bad gasket so I think I may try to reinstall them. I just wanted the most possible HP gain I could get. I'm still weighing my options.