I'm sure I probably could have done better with mine, but I also didn't really highway commute with it at the time, just around town stuff. Mine was also such a weird combination of parts that I really had no idea what was in it. All I know is that it had a factory 4 bbl intake on it, so I'm guessing I had a pretty nasty port mismatch with my heads. Was one of the smoothest running carbs I've ever dealt with though. Could fire it up and pretty much drive it straight away with no issues in the cold once I got the electric choke hooked up.