who has timing key and hi comp

[JRN2786]

I emailed Curtis sparks and they said I could run the +6 key with my setup as long as run 110. But they also said they don't think I would gain anything significant. I have decided to go with the.+3 though so I can mix gas. I'm wondering who has a similar setup and if you could tell the difference after they installed the key. Thanks

[Wheelie]

My setup is a bit different, however I run 4 degrees advanced with a skosh over 11:1 compression. These engines respond very well to added timing, more so when internally modified.