What's wrong with it? I think it's pretty accurate. Not like forged internals, fuel systems, and boost, are rare upgrades for cars these days. There are plenty of cars molesting Supras.
BPU Supras can be anywhere from 380-450+ rwhp depending on mods and fuel used. BPU is a down pipe, boost cut controller of some sort, exhaust, intake and boost controller. Piggyback fuel controllers, cam gears and other boltons are considered BPU+.
Companies finally caught up to a 23yr old Bolton car and people want to bad mouth it now. Lol