Jerking while driving after Injector and Fuel Rail Install? any ideas?

[240dx]

I have a 97 s14 w/ KA24DE i am preparing for T. I installed a set of top feed 440cc denso injectors with a project silvia fuel rail. I chopped the heads off of an NX injector harness and soldered them onto the necks of my existing stock ones. Dont ask me why Anyways. The car drives well and idles perfectly but when i turn the key to acc. I hear a "tickticktick" coming from fuel rail area It doesnt seem to affect the engine. But when im driving with the throttle half open The car jerks and it can get pretty violent.If i close the throttle or go wideopen the jerking stops. My car has all of its power the jerking is freaking annoying.

I have only drivin it 3km or so. Maybe i need to break the new injectors in?

[dc1984]

since u didnt say that u did it, im going to assume that u havent done anything to tune for the bigger injectors. so, my best guess is just that, bigger injectors with no tune.