Posted by Andrew in Calgary on August 16, 2006 at 03:00:41 from from 24.71.223.148
A little ways down the page I'd posted a link to a 2-valve vs. 4-valve comparison I'd put together. Was looking it over again today and found an error in my math. Formulas were right I just can't operate a calculator. The potential difference is not a 36% increase, 'only' 29%.
For those that missed it or want to check the corrected version, here's the link.