I agree, it's not that bad. Trim the high spots off and taper the end a bit. Then chase the threads from the good to the bad as mentioned and you'll...
I saw you got a new catalytic converter from DeLorean Go. I have a feeling it's not up for the strict emissions in California. DeLoreans were able to...
WTH???
...We don't have to deal with the tests here, but if I'm reading them right, it looks like everything for high RPM is worse while the low RPM...
With numbers that high I would say maybe your CAT is bad. Usually these cars do very well on CO and Hydrocarbons. The NOx are usually the tough one....