SanDiegoOverland
NAXJA Forum User
- Location
- San Diego
= :guitar: Pass!! :guitar:
I always get nervous for some reason..haha! Anyone else get all tingly when "the man" comes over and says, "She passed, you're all set"?
My NO and CO WERE a bit higher than I would like, though, at 15mph.
Funny thing is - they're very close to the listed average when at 25mph...
QUITE a bit of difference actually.
NO was up around 600 @ 15mph, but down around 200 @ 25mph.
CO was similar in its change depending upon speed.
Any thoughts? I'm thinking it's probably time for a new cat since the one installed looks like the OE unit, but it seems to be working at higher speeds?
1992 4.0L HO/AW4/Np231/202,000 miles
I always get nervous for some reason..haha! Anyone else get all tingly when "the man" comes over and says, "She passed, you're all set"?

My NO and CO WERE a bit higher than I would like, though, at 15mph.
Funny thing is - they're very close to the listed average when at 25mph...
QUITE a bit of difference actually.
NO was up around 600 @ 15mph, but down around 200 @ 25mph.
CO was similar in its change depending upon speed.
Any thoughts? I'm thinking it's probably time for a new cat since the one installed looks like the OE unit, but it seems to be working at higher speeds?
1992 4.0L HO/AW4/Np231/202,000 miles