| 57mm system for the R model comes with the airfilters (use them) and the ECU for the R model. (dont use it with your S motor)
The S model you're sat on in your avtar, is an 03/04 model, so if you fit the R system from an 03 model year (with the same swingarm as yours) that would be ideal, BUT you may need to mod the frame mount or pipework (official mod says put a dent in it!) for a good fit.
If the R system is from an 04 model (with the black box swingarm) then you will have problems fitting it to your bike with the grey cast swingarm.
Either way, to get the best out of it (or even make it run right correctly) the best option is a PC3, with a custom map.
if budget is a problem (expect to pay about £185 for a custom map to be done, more for an advanced map for each cylinder) then you can try it with one of the standard maps from powercomander.com but you will bet FAR better results with a custom one.
good luck.
Wilf |