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Headers + Evolve-R Header Tune Dyno = Power Loss :(
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04-13-2013, 03:44 PM
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beta
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AFAIK 12.3 is roughly the ideal AFR for maximum power, so you usually want it between 12.5 and 13.
You were running a bit rich before, and now a bit lean.
Have you tried resetting adaptations?
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