a. MT Ralliarts? There are none.
Sorry, I missed the R in MRT there .... that MR touring Evo is what I was talking about. And I was also comma lazy and should have said "in the MR Evo's, MRT Evo's, and Ralliarts" differentiating between three separate cars.
b. Anything to mess up TCU. F* the toads! 
I really dont know what you're trying to say here.....
Anyone have any experience with TCU oddities when tuning their ECU?