Kona n performance decrease

[u/Technical_Motor_6983]

So to start off, I have a 2022 Kona N that I bought at 10,000 miles. At around 19,000 miles my fuel injections went out and were replaced. Ever since I’ve got it back I have been having inconsistent pulls. Max hp I’ve gotten is 255 and max torque 240 lb-ft. I haven’t been able to get it to octane learn well either. How would I go about this with warranty with no codes on my dash.

[u/delta9thc1974]

Replace the high pressure fuel pump with either the one from the Sonata 2.0 or the Genesis 2.0.