I did indeed do a mod on a Mondeo!
While it was almost two years ago, I was pleased with the results, but the owner (in Switzerland, if I remember rightly) was not. Of course, we know a WHOLE lot more about The Groove and how to correct for poor mileage now than then.
KICK IT, Markus!
KICK IT!
As to the TBI, it would be best to see what you're working with. Here, they use two injectors on the V-6 through to the 7.4 (454 cid) so yours must be different from the US versions.
We NEED to SEE this equipment! Once I see it completely (top to bottom) I can probably tell you what you need to do.
Ron