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Generation III Internal Engine 1997-2006 LS1 | LS6
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back fire??

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Old 04-12-2011, 09:21 AM
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Default back fire??
I have a 98z28m6 with 106,000miles Lts, lid, 4.11, and p&p tb. When I punch threw first and second and I let off fast every once in a while it will make a pow sound guessing back fire. Is this something to worry about or what is it?
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Old 04-12-2011, 09:31 AM
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it means you need a tune, sounds like you have long tubes.
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Old 04-12-2011, 01:22 PM
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unburnt fuel igniting, mine used to do it all the time. Different setup now.
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Old 04-13-2011, 11:01 AM
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my 01 m6 does this when cold. its basically stock with a volant intake and flowmaster muffler.
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