I was wondering about that test and after deconstructing it seemed to describe Ti and Fi in the following ways.
Ti: good at fixing logical problems or inconsistantcies
Fi: understanding others and knowing what you want
I've never come across anything mentioning Fi was in understanding others, Fe is for that. Even Fi simply "knowing what you want" should be more of "knowing your true feelings/values and what you want to know about them". Something like that
I was wondering why there wasn't Ti version of "knowing what you want", like "trying to analyse yourself objectively" or something. It seems to say Ti has no self awareness like Fi, but having high Ti I disagree.
Ti being your 1st CP is used to dissect info relayed from Ne so that you(Ti) can come to your understanding/conclusions about it-- I wouldn't call it self-awareness anymore than I'd call Fi that or Ni or Ne etc. A person can know their Fi well or not, even for Fi Doms. It's in how it's easily accessed witch displays self-awareness (as with any of the CPs for any Type). People can become slaves to their Dom CPs, especially the first two if they're emotionally unhealthy and lacking self-awareness (really, who isn't, some of the time?..
or most people most of the time...). So, they become lazy. If you are in that way, you may just deflect other's info/opinions as idiotic or illogical and stubbornly stick to your POV. Are you self-aware with your Ti? Nope~
So far, I've always read you as someone who carefully plays with your words by picking the best ones (Ti), throwing it out for others to play with (Ne) so that when they respond, understanding you or not--, you take from that (Ne) so you play some more by figuring out how best to respond (Ti)!

For those whom misunderstand you though, ah! Bad reaction from INTP's Fe!
And so I wondering if that was why I scored high Fi. Because I scored high on the questions that asked if I knew myself well. Can this not be convered by Ti at all? Because if so it seems a little constricting.
I dislike online tests and find them largely to be lacking. I've often scored INTJ. Once or twice ENxx or something. I forget. Understanding one's own CP is probably best. Well, if it can be understood to begin with as some have a hard time. Here's a
site where you can graft your CP to the INTJ examples.
Edit: I should add. You're probably an evolved INTP who has demonstrated growth with Fi and probably your other CPs as well. I believe that people, of all types, can evolve in not only accessing the full spectrum of their CPs but enhancing their use of them once they become self-aware enough into being emotionally healthy people.