Got my car rego'd finally, the injectors are dirty i think as the idle is a bit dodgy, and starting the engine when its warm can be a bit of a pain.

Anyway I'm looking to swap the injectors to something capable of handling 160hp but without being so big that the idle suffers, as i'm gonna do a few little things to get 140-150hp from the engine (1985 B200E). Any recommendations guys?

Also is the ECU a self learning one? when i'm done with the injectors is the ECU gonna be in need of programming or just a long drive so it can calibrate itself?

If its a B200E, then its not learning, as it hasn't got an O2 / lambda sensor. Having said that, rather like a carb, its 'dumb', so if you're hotting the engine up in general, bigger injectors ought to work. Try a set from a 2.3.

cheers

James