So here's my issue. I am looking to put a Power Commander on my '08 ZX-10R so I did some research and found that the best fit, based on vendor online info, was a PCIII. When I called my local supplier, they told me that I should go with a PC5 rather then the PCIII. To make a long story short, they told me that eventhough PC5 were meant for '09 models and higher, it should work on my '08. But here's the catch, if it doesn't work on my bike, they will not take the unit back. Why recommend it if they're unsure it will work?Anyone has any input on this matter?