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Old 07-20-2025, 10:45 PM   #1
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Cammed ans Supercharged 1LE LS3...

Hey all - wondering what the best plugs to used on a cammed and supercharged 2015 LS3 (mild boost, LSA).

Any info is apprec.
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Old 07-21-2025, 08:02 AM   #2
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NGK BR7EF
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Old 07-21-2025, 05:28 PM   #3
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NGK BR7EF


Beauty... ordering right now
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Old 08-09-2025, 11:33 PM   #4
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The thing has been sputtering, and seems to be misfiring... changed the plugs, but the thing is running very rough, and low on power. Mechanic doesn't know the issue... can it be rhat I need it retuned?? Does a tine go 'bad? Started spittering/running rough after I got it undercoated/oil sprayed.. need some help on this one ..
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Old 08-12-2025, 11:33 AM   #5
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The thing has been sputtering, and seems to be misfiring... changed the plugs, but the thing is running very rough, and low on power. Mechanic doesn't know the issue... can it be rhat I need it retuned?? Does a tine go 'bad? Started spittering/running rough after I got it undercoated/oil sprayed.. need some help on this one ..

Any help?
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Old 08-12-2025, 02:18 PM   #6
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Tunes do not go bad.

Have you pulled the codes?

Did the people who undercoated the car drive the car?
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Old 08-12-2025, 08:21 PM   #7
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Did they knock any wires loose from the O2's or anything? Check those, all 4 of them. Especially the rears.
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Old 08-13-2025, 09:35 AM   #8
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I would assume rear 02 would be tuned out on a Cam/SC Car. I would check for a Ground issue, but oil could have gotten into any of the connections and cause an issue.
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Old 10-13-2025, 10:18 AM   #9
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I would assume rear 02 would be tuned out on a Cam/SC Car. I would check for a Ground issue, but oil could have gotten into any of the connections and cause an issue.


You know what?? I think that I have that slring-loaded isolator in the supercharger (it was recalled by GM, but, I dont think that my builder caught it).
I will pull the blower snout off, replace the isolator, and then go from there...
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Old 10-22-2025, 06:02 PM   #10
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Pull the codes

Don't throw the parts cannon on it

Too bad it isn't stock, modifying any car carries risk and some mechanics will not go near them

Good luck
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