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Tune after headers?

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Old 07-17-2006, 12:19 AM
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Default Tune after headers?
Recently intalled my pacesstter LT's and 3'' true duals, how much power do you usually gain form a tune after a set up like mine? I heard that the LS1's run a little lean before the tune.
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Old 07-17-2006, 12:39 AM
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Depends on how shitty it runs. My friend picked up like 20rwhp/25rwtq or something like that from the tune alone after LT's, catted-y, and GMMG.
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Old 07-17-2006, 01:17 AM
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The car runs great, but I don't know what the fuel trim looks like throughout the RPM ranges. Do some cars actually run rough, after headers?
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