Hey Guys Finally installed the new Edelbrock Pumper onto my 650L with the help of "XR650LBUM" aka Mike. Install was very easy and straight forward after Mike cleared up a few questions i had. Cable routing was much easier then other folks made it seem. We changed the default settings to the settings that Mike uses with great luck, but my results were different. At first we had some popping and back firing, tried a few different combos, took it for a short test drive and had some loud backfiriring. I decided to try their recommended "Default" settings of needle #16 and 15 clicks out, started up easy as pie and rode like a raped ape! Zero backfire, Zero hesitation (symptom that drove me NUTS with the stock carb), TONS more pull and no hiccups! It truly does ride like a completely different bike and i can say that the carb was worth EVERY SINGLE PENNY! I was at wits end trying to dial in my stock carb and begin to resent my bike out of the frustration I am most stoked with this new mod and i am very interested to see how it does in the dirt!! Thanks Again Mike!