Have had a new injector shortly after purchasing the car, my mechanic said that there had been a new one fitted recently as well. The car is still a little lumpy at times so as not to have this happen again or get worse I'm gonna but the external one on as this is cheaper than replacing the pump which is still working.
I will ill get the injectors cleaned at some point but with the new filter in I can be happy with the fact that they won't get any worse and I can easily change it when I get a service.
but my question still remains for the die hard clio owners, will the added external filter restrict fuel?