Exhaust Y-Pipe
01-20-2018, 11:50 AM
#16
CF Veteran
Join Date: Nov 2017
Location: Groton, MA
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Year: 1995
Model: Cherokee(XJ)
Engine: I6 4.0L
The OP is from NJ, so he should be fine with replacing the pipe with a non-CARB part.
I've learned a lot of interesting information from this thread, so thank you guys.
I've learned a lot of interesting information from this thread, so thank you guys.
05-28-2019, 10:44 AM
#17
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Join Date: Mar 2018
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Model: Cherokee(SJ)
Do bear in mind that if you DO have the pre-cat setup in your XJ you absolutely DO need to replace it with the same. It's illegal to do otherwise and beyond that there are extra O2 sensors as you can see in the excellent photo from fb97xj1 that if you don't have connected will cause all sorts of wonkiness with your engine operation. There is zero advantage to adding cats if DO NOT have the pre-cat setup. Some have argued that the extra heat will cause problems with the pre-cat setup.
If you're removing the Y-pipe, it might also be a good time to consider replacing the flawed 0331 head if you still have it on your 00 XJ. If you don't and your head cracks you'll be doing round 2 of removing the exhaust.
If you're removing the Y-pipe, it might also be a good time to consider replacing the flawed 0331 head if you still have it on your 00 XJ. If you don't and your head cracks you'll be doing round 2 of removing the exhaust.
05-28-2019, 11:14 AM
#18
Old fart with a wrench
NY doesn't use a tailpipe emissions test. As long as you have a pair of certified CA cats and no CEL on, it'll pass. On my 2000 XJ with CA emissions, my downstream cat fell off and because it's not monitored, my mechanic just installed a regular muffler and pipe and passed it. If you need an 02 sensor, you need to buy CA certified ones which cost twice what other ones do or you'll get a CEL code set. Without that downstream cat, it sounds pretty good!
After 96, any new car sold in NY had to be CARB equipped.
Funny story. My 2000 WJ was originally delivered to NY, but was transported by a dealer and sold in PA. It has CA emissions on it. It was bought at auction and transported back to NY in 2012 when I bought it from a used car dealer. Being a used car from another state, does it have to have CA emissions? The state says yes, but I question that. They say if it was converted to Federal emissions while out of state, then it doesn't have to have CA emissions. That's not as easy as it sounds because the PCM would need to be reprogrammed as well.
After 96, any new car sold in NY had to be CARB equipped.
Funny story. My 2000 WJ was originally delivered to NY, but was transported by a dealer and sold in PA. It has CA emissions on it. It was bought at auction and transported back to NY in 2012 when I bought it from a used car dealer. Being a used car from another state, does it have to have CA emissions? The state says yes, but I question that. They say if it was converted to Federal emissions while out of state, then it doesn't have to have CA emissions. That's not as easy as it sounds because the PCM would need to be reprogrammed as well.
Last edited by dave1123; 05-28-2019 at 11:35 AM.
05-28-2019, 01:51 PM
#19
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Join Date: Nov 2017
Location: Groton, MA
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Year: 1995
Model: Cherokee(XJ)
Engine: I6 4.0L
If you live in CA or NY (which I guess we can infer that you do), then you need to find a 50 state part (and pay the over-inflated cost) if the inspection station you use will be checking for that stuff. In theory, you may be able to get away with a non-carb part if you can legitimately claim the vehicle is exempt and/or the repair was done out of state by a previous owner. Of course, I'd never advocate for breaking any law, so I'm purely speculating.
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