On the Suzuki's you can readjust the fueling a LITTLE bit in the black box, doesn't come anywhere near a PC but if you have only fitted a pipe you can get away with it.

Ifitted the PC3, reset the TPS both high and low values & I uploaded a new map.

Instant success, quicker, crisper throttle, pulls like a train, as standardshe was running way to rich to make power, the PC3 sorted this out straight away.
The ingition box has been ordered too, as well as the O2 plug.

Onwards and upwards