I went to replace the o2 sensor yesterday and found this.... (new)/(jacked)



hahahha.... upon further inspection and a quick "billman bang" on the cat, confirmed my suspicions.

I guess berk HFC, here I come...

I guess that also confirms the rattle I've been searching about now that I've had a minute to actually get under the car myself.

 

Same thing happened to me. Testpipe and I was done with it.

 

Same here, sheared the head of the O2 right off. Berk 70mm HFC and a new O2 and it's back in business.

 

The Berk is sweet, consider it a sign that you were due for a little HP bump