Had a solid tune in since April 2020. Just recently had a massive loss of power and multiple misfire and lean codes.
Replaced coils, wires, plugs, maf sensor.
Then found fuel in the vacuum lines.
Still have same issue I think it's the fuel pressure regulator.
Dealership says its my after market parts and tune. after demanding they replace the fuel pump assembly where the fuel pressure regulator is located it supposedly still has the same issue.
I'm fresh out of ideas every mechanic I talk to says it's the fpr. That includes other dealerships.
Thanks for any help provided.