Nemo_hohz

Hi I own a 85' turbo efi pickup with an aftermarket turbo , the truck starts to bog out at 8psi of boost or when I run the truck for a long period of time it bogs out when the turbo comes on, all the owners before me couldn't figure out the problem , the pervious owner put an anftetmarket turbo after that previous owner tried to rebuild the motor but couldn't and didn't put the turbo back in but was running the truck without the turbo in, long story right ? Well someone must have had the same issue as me somewhere , hopefully someone on here can help 😭