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Well, it being an ‘05 it certainly didn’t have EFILive before as ‘06 is the oldest supported.

I won’t pretend that Bully Dog is great tuning, or even good, but shouldn’t be causing issues. I’d toss a boost fooler on as a quick fairly cheap check and go from there
 

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Hit post before I wanted. The wastegate solenoid could cause it, it wouldn’t open the gate and the ecm would see that. A boost cooler would narrow that down quick
 
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