gary55
Well-Known Member
Until you start getting close to proper jetting you won't feel any improvement. I'm at just over a mile high and using a 78. You might want to try a 80 or 82 before you give up.I have the NT carb on now at about 100' asl, I've tried Jets from 66 to 75 with no luck. There might be a little more top end, but gas mileage and overall performance is less than stock carb so soon as I get some gaskets the NT is coming off.