Issues getting a reference rx 480 working on Mojave, Lenovo s20

This is the first time have used a amd card and for the life of me I can get it to work, I always end up with one of two results, black screen after post(right after the verbose messages end) or 5MB ram,

things I have tried, google, weg+lilu, and faking the pcid

weird things about the system and specs

its a Lenovo s20 with a w3680 and 28GBs of ram,

the gpu is a sapphire rx 480, same as this one here Amazon

the system does not support Uefi boot another headache Im dealing with,

google link to efi folder efi

thanks for any help.

submitted by /u/hoodyracoon
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