When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
My Stage 1 100 octane Xede timing map is zeroed out, but it was custom tuned by Shiv. You would have to moniter for knock to be sure it's done safely. I would believe that with VP 109 it would be safe as long as your fuel map is not too lean.