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Old 10-09-2023, 08:10 PM   #2
Joshinator99
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Drives: 2017 Camaro 2SS A8
Join Date: Aug 2018
Location: New Ipswich NH
Posts: 6,350
Quote:
Originally Posted by GlennB12 View Post
Hello,
I got a P0430 code on my 2021 LT1.

Says I should replace the catalytic converter.

If I purchase a new catalytic converter from GM, would I have to tune the car? I saw somewhere online that some cars need a tune after a cat replacement and wasn’t sure if I could just replace and break it in and drive normally. Just got the car and only have about 16k miles on it.

I have ordered a O2 sensor, but I am going to swap the stock sensors to trouble shoot and see if the code goes to the bank 1 side to see if possibly the sensor went bad. Still new to this stuff so forgive me if I sound amateur about this. Just trying to get some advice on how to get rid of this engine code before emissions.

Any input would be greatly appreciated!
Thank you.
Is the car completely stock…?
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2017 Chevy Camaro 2SS A8 Whipple 3.0, Mast Black Label heads, ATI 8L90, Fore triple in-tank pumps, 112mm TB, LPE +52% injectors & BB HPFP, TooHighPSI/Katech port injection, 15” conversion 1066 WHP STD/1027 SAE, 9.10@152.5 (new times coming)
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