those hp number seem high for E50, AccordingtoJoel.com has the fastest 10th gen atm, with im pretty sure the highest HP numbers also. He is at like a E75% blend making 415 hp and like 410tqi have a 2019 honda accord sport with the AT10 and the 2.0 i am running the flex fuel and with stage 2 tune and yes i have all the PRL added parts the inner cooler and motor mounts catless downpipe PRL center and injen cold air intake with a racing map i can run up to E50 before i start having post detonation issues so i stay safe at 45%E blend to stay safe have had no trans issues and am at almost 35k miles fingers crossed it stays that way and my HP 415 torq 398