R70 Pump on Stage 1

[pcwork]

Hey everyone I can get a R70 2.2HDI C5 Fuel pump and was wondering, If i got it and just installed it will it work fine with noticeable speed increase? Plus if i got the 1.6HDi fuel sensor will t work even better? Or does it need to be remapped to work?

So the theory to my question, will it work without a remap or not? and will I notice any speed difference?

Thanks