09-03-2022, 01:31 PM | #1 |
Drives: 2013 ZL1 Join Date: Dec 2016
Location: maryland
Posts: 4
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Spark Plugs gone bad
Need help please. Just installed Kooks Headers and high flow cats. After 100 miles spark plug gaps are crazy big from 35 to over 65 on most of them. Stock plugs AC DELCO 41-104. Engine is stock just the headers.
2013 ZL1 only 36,000 miles Thanks for any help |
09-03-2022, 06:03 PM | #2 |
It don’t come easy.
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Looks like the electrodes are gone on some of those plugs. Did you have a tune done after installing the headers and cats?
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09-04-2022, 09:38 AM | #3 |
Drives: 2013 ZL1 Join Date: Dec 2016
Location: maryland
Posts: 4
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No tune didn't think tune was needed for just headers and cats.
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09-04-2022, 09:48 AM | #4 |
It don’t come easy.
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Major change to how the engine breathes with headers. I’m sure others will tell you as well, you need a tune. I’m surprised your not getting a CEL just from the rear O2’s.
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09-08-2022, 01:42 PM | #5 |
Drives: it changes Join Date: Nov 2010
Location: Norn Iron
Posts: 1,126
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If they are genuine plugs, and genuinely only 100 miles....you seriously need the tuning looked at.
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09-13-2022, 06:04 AM | #6 |
Drives: 2012 Chevrolet Camaro l99 Join Date: Aug 2020
Location: Austin, TX
Posts: 2,109
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Yes sir you sure do. It changes the A/F ratio. How many miles are on the engine?
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10-11-2022, 08:19 AM | #7 |
Drives: 2010 Camaro SS2 2012 C6 vette M6 Join Date: Jan 2022
Location: Atlanta Ga
Posts: 75
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I switched to NGK TR6 series plugs. Runs much better. I have headers and hi flo cat. No special tune.
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10-11-2022, 09:43 AM | #8 |
It don’t come easy.
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No tune done since headers and hi flows?
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10-11-2022, 09:54 AM | #9 |
Instagram: Sangstah
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Def need a tune for headers and high flow cats.
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10-11-2022, 11:57 AM | #10 |
Drives: it changes Join Date: Nov 2010
Location: Norn Iron
Posts: 1,126
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10-11-2022, 12:13 PM | #11 |
It don’t come easy.
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Those aren’t his. Those are the OP’s.
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