YOU SAID:
I knew I should've gotten the turbo
INTO JAPANESE
私はターボを手に入れるべきだと知っていた
BACK INTO ENGLISH
I knew I should get a turbo.
INTO JAPANESE
私はターボを手に入れるべきだと知っていました。
BACK INTO ENGLISH
I knew I should get a turbo.
That didn't even make that much sense in English.