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 gauge, I've seen it read as high as 16psi before this happens
I've read this is the ecu cutting fuel? How can I remedy this? Id appreciate any help I've been racking my brain for quite some time