I have the Dynatek for my Prowler, it did pick up a little power and a couple mph. I do have an issue that may or may not be related. It does not start as weel hot now. It s almost if my battery is low and I have to jump it. If I let it cool it starts fine. I lost my stock computer so I cannot go back to test it. If anyone has their stock one that they want to sell or trade for this Dynatek one, please email me.