Just the link.<ul><li><a href="http://www.nrgtek.com/store/detail.tcl?session=4.2241+keyval=195+c=nothing+d=0 +e=0+f=index.tcl">Python Venom 400</a></li></ul>

These offsets are based on the stock data mappings, and probably can give some performance improvements, but not as sophisticated or effective as actually modifying the ECU data maps. Considering the price, I would think you are better off with a "real" chip upgrade.