The real T4s do have water cooling.
It is a good idea really, it really helps a great deal with the warm up time, you want the car to be cold and running on cold start for as little time as possible, and pumping coolant through the exhaust is a great way to warm up quickly if you leave it the way ford had it plumbed with no cooler,
And start stop it helps cool the core.
Last edited by James @ M Developments.; 10-05-2012 at 04:17 PM.