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Joined: Mar 2002
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From: Los Lunas, New Mexico, USA.
Vehicle: 2001 Hyundai Tiburon, 2004 Kia Sorento, 2010 Kia Soul
QUOTE (Cypher @ Aug 9 2007, 02:25 PM)
P0422 Main catalytic converter, bank 1 – efficiency below threshold Catalytic converter, wiring, HO2S 2
any updates?
any updates?
Yes, I've been talking to BHurlin about this, we've got a few ideas, and are working them.
I'm going to do some more research on this code this week.
Thread Starter
Senior Member

Joined: Mar 2002
Posts: 34,642
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From: Los Lunas, New Mexico, USA.
Vehicle: 2001 Hyundai Tiburon, 2004 Kia Sorento, 2010 Kia Soul
I've got a set of cores here, and yeah, hopefully we'll have an update soon. We just gotta fix this A/F ratio to get the power out of it.
I was thinking, if someone that has a Standalone or decent piggyback wants to try them, you can contact BHurlin. He may sell you a set if you do before and after dynos.
We have several things we are working on to make this an easy solution, so thanks for your patience folks.
On the ther side of that note, ask SOCKS what he thought about them. My car moves pretty decent. LOL
I was thinking, if someone that has a Standalone or decent piggyback wants to try them, you can contact BHurlin. He may sell you a set if you do before and after dynos.
We have several things we are working on to make this an easy solution, so thanks for your patience folks.
On the ther side of that note, ask SOCKS what he thought about them. My car moves pretty decent. LOL
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Joined: Aug 2009
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From: Washington D.C.
Vehicle: Hyundai Tiburon FX
i used to have that code the same code. it has to do with your O2 sensors not being wired right. but yeah you might be running rich from that cam. it could also mean your O2 DIY extension might have fawked up somewhere.
my question is did they get readings from your car with a software? they could easily find out what it was, easily. when i find a laptop i'll use Jay-M's obd tool. do you have one? i thought you did...
my question is did they get readings from your car with a software? they could easily find out what it was, easily. when i find a laptop i'll use Jay-M's obd tool. do you have one? i thought you did...
Thread Starter
Senior Member

Joined: Mar 2002
Posts: 34,642
Likes: 0
From: Los Lunas, New Mexico, USA.
Vehicle: 2001 Hyundai Tiburon, 2004 Kia Sorento, 2010 Kia Soul
Guys, please, no more questions till this is worked out. I answered all of this before. The code is for my exhaust, that's not the issue. My 11 or 10 to 1 A/F ratio is what's wrong.
I'm going to close this for now, it'll open back up when I have mor einfo.
I'm going to close this for now, it'll open back up when I have mor einfo.


