Will split testing affect my Google rankings?

Will split testing affect my Google rankings?

I am ranked well for dome good keywords for one of my sites.

I want to implement this split testing method
http://www.blackhatworld.com/blackhat-seo/e-whoring/141646-heres-simple-lander-rotator.html

Will mt google position drop if i do this?Pls advice.

I'm guessing you'd want the split-test script to show the current page for search engine bots, and show the test page(s) for human visitors. It seems that a decent split-test script would have this feature, but I'm not sure what else you'd need to implement this, maybe a list of go0glebot (yah0o, etc) ip addresses, maybe that somehow auto-update.