Lean Spike with High Load

So does anyone have a recommendation of what power valve to fiddle with? Primary or secondary? Thread sort of got hijacked


The thread isn't high jacked. You want to correct the stumble don't you? Work with the correct power valve first. Most don't run a power valve on the secondary side because you are not cruising on the secondary side. If you have a power valve on the secondary side, plug it and add 8-10 jet sizes and then start your tune up.