This 2004 Aprilia Tuono came in with an old serial port Power Commander PC II already fitted (the owner had got it from a friend), although it was actually from a Mille. Plugged into the Tuono the owner found that there was definitely some improvement even with the Mille map; but he decided to bring the bike in to get it optimized suit his engine.
And this is where the problem started – the small red cover that stops water getting in to the serial port connection had been left off a long time on the previous bike, which now made it impossible to get a connection to remap with. Unfortunately, the owner was left with a simple choice; live with the map he had, or replace the Power Commander. He thought about it, and decided that the benefits (of which there are plenty) of fitting a PC III far outweighed the set-up as it stood. So on the new unit went – and the extra fuel added off the bottom plus the PC III’s accelerator pump function transformed the power delivery.