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Old 06-14-2021, 04:11 AM   #7 (permalink)
SouthArk370Z
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As others have said, the ECM will adapt to protect the engine but performance will suffer. Just don't go WOT or rev the engine very high until you get the tune.

The rule of thumb is: Intake mods OR exhaust mods - no tune needed. Intake AND exhaust mods - tune needed.
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