Will I get a code after header install??
Thread Starter
Safety Car
Joined: Apr 2008
Posts: 4,823
Likes: 1,826
From: NJ
2025 C8 of the Year Finalist - Modified
2023 C8 of the Year Finalist - Unmodified
2022 C7 of the Year Finalist - Modified
2021 C7 of the Year Finalist - Unmodified
Will I get a code after header install??
What are the chances I will get a check engine light with a header install? Why does the code show up? And what is the fix if it happens? Thank you for any and all help!! 
Thread Starter
Safety Car
Joined: Apr 2008
Posts: 4,823
Likes: 1,826
From: NJ
2025 C8 of the Year Finalist - Modified
2023 C8 of the Year Finalist - Unmodified
2022 C7 of the Year Finalist - Modified
2021 C7 of the Year Finalist - Unmodified
TTT. Anyone? Bueller...? Bueller...? 
Melting Slicks
Joined: Feb 2007
Posts: 3,266
Likes: 8
From: Indian Rocks Beach FL
St. Jude Donor '08-'09-'10
I didn't with my Melrose headers and exhaust but they use both the front and rear O2's with Random Tech hi flow cats. Friends have gotten codes with other brands.
Burning Brakes
Joined: Jan 2004
Posts: 953
Likes: 4
From: Guelph Ontario
Otherwise good luck and happy mods.
Thread Starter
Safety Car
Joined: Apr 2008
Posts: 4,823
Likes: 1,826
From: NJ
2025 C8 of the Year Finalist - Modified
2023 C8 of the Year Finalist - Unmodified
2022 C7 of the Year Finalist - Modified
2021 C7 of the Year Finalist - Unmodified
Thanks for the help guys!! Very much appreciate it! 
Melting Slicks
Joined: Oct 2007
Posts: 2,798
Likes: 8
From: It's true money can't buy happiness, but it is more comfortable crying in a Corvette than on a bicyc
St. Jude Donor '13
I have the Dynatech system. Deleted the rear O2's and placed the rear sensors in the front locations per advice of many. I occasionally throw a Slow response Bank 1 sensor 1 code. It's common from what I'm told but I still question why only bank 1 and not on bank 2. I will replace the bank 1 sensor and see what happens. The code is easily reset with the DIC.
