Correct Injector choice depends on expected horsepower output and rated fuel pressure. If sticking with the T4 you can easily get away with a set of 85lbph injectors.

Cost to map is £500
Airinjector driver adds £100
Closed loop adds an additional £270
http://www.motorsport-developments.c...closedloop.htm

Time to complete is 1 full week (Sat - sat ideally) Currently booking April.