4.6 97 couger, , had a clogged catalytic converter I cut off , runs worse
What is your question?
Cut the right side cat off and welded a 45 degree exhaust pipe in and now it runs worse , I had two codes for o2 sensors bank 1 , replaced the down stream , up steam was replaced about 3 years ago so didn't do that one , there's a lot of pinging when I first take off but once it hits 3500 rpm it takes off and runs great, when I had the right side exhaust open I started the car the see and here how it sounded , it had Good throdle response just loud , but once the pipe was on it changed
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Your answer is probably going to be found , when you determine WHY the converter(s) failed to begin with. 97 is OBDII , a modest scanner for viewing LIVE data may be worth it , plus studying a little on what the proper readings should be is a plus!
