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  1. General Maintenance, Troubleshooting & Accidents.
    2005 wrx. Cobb SR intake, tanabe catback, AP stg1 Car runs great and strong in every gear until I hit between 4500-5k rpms, then out of no where no power, detonation I assume? (Sounds like popcorn popping...pop pop pop pop) happens and it won't accelerate anymore. I have an aem digi boost...
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