There is always a lot of talk on this forum about tubocharging but only one member actually did anything. Back in 2011, a forum member, sunnysmith (a very nice guy), turbo charged his Transit Connect. Do a search on his forum name and enjoy the read! Here is one of his posts......
With the current FSWERKS setup I am not sure where we are at on HP, but it is probably above 200. Once we have the electronic boost controller in we can push it more, but even where it is, the van is awesome. I've put 500 miles on it since the install and have been driving a little more spirited now and then. Most people that I take for a ride just smile and laugh. They can't believe it. The van is a real contradiction. You hear the big turbo whoosh and it puts you back in your seat a little bit.
I think the real value of the turbo comes out on the highway. Its not a sports car, but it is drivable and you can cruise at 80mph in the wind with no problems.
As for the transmission... With the extra cooler on it, I have not seen temps above 150. Granted, the highest outside temp has been 90, so it will be interesting to see what happens this summer. I don't feel that I am abusing it really.
If I remember correctly, he also added a third row of seats!
Sunny has not been on the forum since the turbo project finished back in 2011. I always wondered what happened to him.