"before test" stock 122.5 main, 32.5 pilot, and stock muffler.
About 13.2 rear wheel HP

"after test" 125 main, 35 pilot, and short straight through "too loud" muffler.
About 13.8 rear wheel HP



Not much gain but eliminated that dip in the stock run. I don't know if it's worth fooling with.

Plug looks a little too light. Might try a 127.5 main.

SAI removed in both runs but that should not make any difference.
Not all dynos measure the same but the percent of gain should be accurate.