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post #1 of 5 (permalink) Old 09-11-2019, 12:03 PM Thread Starter
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P0430 bank 2

I have had this pop up twice now when under heavy acceleration. I clear the code and it stays away for a while.

I have a full custom SS Bam exhaust with cats (4) from the stock manifolds back.
The O2 sensors are stock and original with 100,000 miles on them.

I donít know if itís the sensors or a bad cat, but I guess it could be either. Maybe both?

I have techstream software and can run tests, but I donít know what Iím looking for. I do know that if I run the PID app on my phone, both banks do not match. At all.

Any help would be appreciated. The cats are aftermarket per Keith. I believe they are magnaflow.

I also believe I have some pinhole leaks, but they are after the cats.

@dirtydeeds .

Thanks,
Jon

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post #2 of 5 (permalink) Old 09-11-2019, 12:24 PM
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Thatís your passenger cat being Ďless efficientí than the ecu is expecting.

Grab and 18mm anti fouler from Autozone. Drill it out. Install on sensor. And screw back into truck.

Give a call with any questions. 760-877-4234
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post #3 of 5 (permalink) Old 09-11-2019, 07:49 PM Thread Starter
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Originally Posted by dirtydeeds View Post
Thatís your passenger cat being Ďless efficientí than the ecu is expecting.

Grab and 18mm anti fouler from Autozone. Drill it out. Install on sensor. And screw back into truck.

Give a call with any questions. 760-877-4234


Thanks Keith

I want that on the front or the rear sensor?

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post #4 of 5 (permalink) Old 09-12-2019, 12:08 AM
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Rear sensors monitor the cat.
Front ones control the air fuel ratio.

So you need to put the cheater on the rear sensor on the affected bank.

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post #5 of 5 (permalink) Old 09-12-2019, 10:12 AM
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Exactly. Rear sensor.
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