I thought I had a lot of Ti (Te?) according to different online tests I've taken which is why sometimes I test as ENTP or INTP.
I also love categorizing things and making lists - but it may be a control issue and a way to deal with overactive Ne. I once DJed with my INFP friend who is a professional DJ and she was really surprised and even laughed at how I made my song lists - I literally started writing down 6-8 categories with a kind of music and sorting appropriate songs into them. I think she thought it was overly much.
My Ti/Te comes out most when I am organizing an event or workshop and when I speak publicly and especially when I am angry or doing "business". I am very unsentimental when it comes to money and negotiating deals and such i.e. "work". And I am and always have been a good organizer of events - that's more Te though.
INFPs [that I have dated] and some other people have told me that I cut people with my words and they were afraid of making me angry because of what I would say to them. It has more to do about being truthful than being mean or vindictive. But I'm not sure how much of that is Ti? I get super exact and economical with my words so that I am explicitly clear. I speak like an unsentimental XNTJ.
I also do notice when things don't make sense or fit but I live my own life in a way that doesn't make logical or common sense.
I think my Ti while strong(er than average for an ENFP) is more a survival skill I had to ramp up quick on growing up in an extremely INTX and even NF hostile household and later going to a very SJ/NT and outright hostile (to me) school. In crisis situations, I think Ti must shine for ENFPs because supposedly we're good in crisis situations and I know from experience that I am. However, under regular stress I absolutely do not make any logical sense (and I'm hella scattered). I'm not even kidding. There is a horrible, horrible team leadership excercise we did in highschool that highlights this fact very well.
A group of about 40 kids took the MBTI test and we got our 'types'. Then we did this day long leadership workshop. At one point we broke up into teams of 5-6 and had to figure out a way to make the tallest structure out of flexible straws. I made myself the de facto leader for our group and got my team to do something absolutely nonsensical to the straws. Our building couldn't even freaking STAND up. It wasn't even a STRUCTURE, it was a sad, sad lump of broken straws that I directed people to put together in that way. Everyone else kicked our ass by A LOT. Our adult supervisor even refused to be in the picture with us at the end of the excercise because she was EMBARASSED by how poorly we did. So, um, yeah, I think that was poorly developed Ti/Te?
However, if Ti is a life skill, it's a life skill that every "feeler" has to become familiar with wielding to be taken seriously in the world. Again, that's my own experience speaking.