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Old 11-26-2019, 02:40 AM   #1
remcafee
 
Drives: 2007 Toyota Yaris 3 door
Join Date: Sep 2018
Location: Arizona
Posts: 14
Catless CEL problem

Hello, I recently did a straight pipe boom tube on my yaris and tried putting in an 90 degree o2 bung but it still shows p0420 code, anyone know of any tricks or hacks to bypass the p0420 code? thanks!
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Old 11-26-2019, 06:58 AM   #2
06YarisRS
 
Drives: 2006 Yaris RS
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Quote:
Originally Posted by remcafee View Post
Hello, I recently did a straight pipe boom tube on my yaris and tried putting in an 90 degree o2 bung but it still shows p0420 code, anyone know of any tricks or hacks to bypass the p0420 code? thanks!
I have read about O2 simulators and they are available online but I'm not sure how well they work. I believe that Toyotas are pretty sensitive in terms of thresholds.
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Old 11-30-2019, 01:50 AM   #3
remcafee
 
Drives: 2007 Toyota Yaris 3 door
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Location: Arizona
Posts: 14
i saw those but im im as dumb as a rock when it comes to cutting wires and stuff ��
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Old 12-04-2019, 11:27 PM   #4
malibuguy
Obsessed with 1.5L
 
Drives: '10 PW Yaris Sedan
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Posts: 881
I have a 100cell race cat and I have an angled tube feeding the O2 but with only about a 5/16" hole actually feeding it
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Old 12-05-2019, 12:24 AM   #5
remcafee
 
Drives: 2007 Toyota Yaris 3 door
Join Date: Sep 2018
Location: Arizona
Posts: 14
what brand is your cat? you notice any piwer increase?
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