I have 90 days to return it if I don't like it. I like the ET Genie, but I don't have the clearance to run it. The new carb has a choke and vac secondaries. I have time to give it a chance. Most people running the carb on the street seem to love it. I'll be keeping my 750 DP in case this new carb doesn't work out. But right now, the DP is most happy at wide open throttle. The shop that built the carb said it was built with best ET in mind, and not street duty.