[beepbeep]

I'm very sceptic to "zero clearance hi flow extra ultra ultimate superpower 2000" turbochargers which have been "enchanced" by small companies.

Equipment to measure efficiency and properly map a turbocharger costs more than total yearly turnaround of many of those companies.

With other words, as "zero clearance hi flow ultra infra" turbo that doesn't have a verified turbo map its unverified. Most of the times, "modifications" are unscientific...like clipping the wings (makes surge line go up but it decreases the efficiency) or making grooves into turbo compressor intake that look fancy but have no proven value.

With that in mind, I would chose OEM Garrett turbo with published turbo map any day of the week. Also, KKK don't have any BB-cartriges either.