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post #1 of 5 (permalink) Old 04-30-2017, 04:56 PM Thread Starter
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O2 Sensor

Getting ready to replace the cat. ( 150,000 miles on car )
Hope I'm not duplicating.
Also putting in new o2 sensors
Confused on Oem
Some sites say ac Delco, Bosch and denso...
Thanks......
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post #2 of 5 (permalink) Old 04-30-2017, 05:25 PM
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Stick with OEM or ACDelco. Everybody here has had bad experiences with Bosch and Denso. When I lost my downstream sensor I bought an ACDelco and it worked out the door and never failed since. I listened!!!

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post #3 of 5 (permalink) Old 04-30-2017, 05:29 PM
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Yup oem or AC Delco. I've bought the Denso ones and both failed within days. Bought straight from GM and no issues for the next 4 years.
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post #4 of 5 (permalink) Old 05-01-2017, 08:46 PM Thread Starter
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Thanks
Don't want to spend the time to have it fail within a year.
I was making sure what GM used when they built it. To make sure I get the same ones. 145,000 miles and no codes. Just the cat code.
I know this is another thread, but I'll ask anyways.
Is there any increase in performance or mpg with a cat back after market, or it's just to make it sound sweet ?
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post #5 of 5 (permalink) Old 05-05-2017, 02:42 AM
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Quote:
Originally Posted by Baltimorewill View Post
Thanks
Don't want to spend the time to have it fail within a year.
I was making sure what GM used when they built it. To make sure I get the same ones. 145,000 miles and no codes. Just the cat code.
I know this is another thread, but I'll ask anyways.
Is there any increase in performance or mpg with a cat back after market, or it's just to make it sound sweet ?
I received my best mpg while completely stock when I did the gmpp intake and gmpp performance exhaust I was always 3mpg shy of my stock best numbers. However it sounded awesome.
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