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Anyone here with a NNBS flex fuel? Need some info.

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Old 03-31-2012, 10:13 PM
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Default Anyone here with a NNBS flex fuel? Need some info.
Could someone please look at there injectors and tell me what the part number is?
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Old 03-31-2012, 11:13 PM
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Should be 12613411 for the 5.3
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Old 03-31-2012, 11:20 PM
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Tying to find out so, I can get the injector tables swapped over for my tune. Those are the ones I bought. Just wanted to verify what year it was.
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Old 03-31-2012, 11:23 PM
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That's the same pn for '09+ 4.8s and 5.3s.
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Old 03-31-2012, 11:31 PM
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So 09+ flex fuel 4.8/5.3 have these? Or just regular 4.8/5.3?
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Old 03-31-2012, 11:31 PM
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Do you happen to have a stock tune that had these in it?
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Old 03-31-2012, 11:35 PM
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Originally Posted by mcfarlnd
So 09+ flex fuel 4.8/5.3 have these? Or just regular 4.8/5.3?
Everything after 09 went to flex fuel, the injector p/n for 07-08 (and possibly before that, I'm not too sure) NON-flex is 12580681.


Originally Posted by mcfarlnd
Do you happen to have a stock tune that had these in it?
I don't have the stock tune for flex injectors, no.
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Old 04-01-2012, 12:05 AM
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Ok. Thanks for the help
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Old 04-01-2012, 12:12 AM
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Originally Posted by Preston129
Should be 12613411 for the 5.3
+1
My ’11 5.3 LMG has #12613411 injectors. AC Delco PN is 217-3411.
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