I had recently called Fuel Moto for a Power Commander. I asked him which one I could use on my bike. I have a 08 Lowrider with Rush slipons and I am going to put on a se heavy breather. He said I could use the commander III or the new commander V. I read that the commander V was for 2009 models only, so I call Dynojet who manufactures the Power Commander and I was told they do not support or have tested the new commnader on bikes other than 2009's. I found out that the one Fuel Moto wants to sell me is a retrofit Power Commander V made for bikes before 2009. I would prefer the new model V but I am wondering if I should try one that has been retrofited. Fuel Moto warrantys it but I not sure about it. What do you guys think?