Can try this tune from a 2000 Chevy 2500 6.0L 4L80E 4x4 stock block, cam and heads. Might be a better place to start if your current tune is not working well.
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Can try this tune from a 2000 Chevy 2500 6.0L 4L80E 4x4 stock block, cam and heads. Might be a better place to start if your current tune is not working well.