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This is all very depressing. Seems everywhere I turn, I'm reading about people with tunes causing more problems than they fix. Have recently seen threads with dynos showing high-rpm power dropping off for ESS, AA, and Evolve tunes. Makes me wonder whether best to just stay stock after adding my headers? Wonder how much I'd really be giving up...? Any thoughts? Don't have time to constantly dyno/adjust. And if a tune is needed to really get the benefit of the headers, maybe I'll just skip those as well...
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