I see Te as more pragmatic and Ti as wanting to make sure it fits into the framework. The Te seems to look for the quick fix- what will solve the problem now. They take out the troubleshooting manual and follow what it says in there step by step. Ti is less likely to follow the algorithm in the manual and looks at the general principle something works and fits into a framework. Ti looks for a more generalized solution, one that can be more universally applied. Te seems quicker than Ti as a result, the algorithms may solve the problem, say 90% of the time but what about the 10% of the time when the algorithm doesn't apply. Ti investigates that 10%, trying to that into a 'framework' so that there is some more universal system for solving a problem.
I see myself as more of a Ti user than a Te user and I've gotten into conflicts with Te users over this.
5w6 or 9w1 sp/so/sx, I think