Quote:
Originally Posted by lcw333
Could this be the HPFP failing? When the HPFP fails, can it be gradual, or does it just fail and then go into limp mode?
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Gradual failure typically. Without logs we can't determine if it's pulling timing, not hitting boost target, or not getting fuel (could be either lpfp or hpfp). Spark, air, fuel. I hope you didn't pay them for diagnostics and not get a diagnosis.