do you know of any current studies where they have proven that ethnol production is a net loss.
Nope every modern study I know of shows its a significant net gain. Most quote a number near 35% gain.
Patzek and others that claim the contrary have been repeatedly discredited for using bogus numbers that in some cases represent the state of the art 30 years ago and worst case assumptions about fertilizer rates.Patzek spent nearly a decade working for Shell Oil Company as a researcher, consultant, and expert witness. He is the founder and current director of the UC Oil Consortium, an organization funded mainly by the oil industry to the tune of $60,000-120,000 per year, per company.
That said, lets start another thread on the "economics of ethanol" and avoid filling up a technical FAQ in the Engine Management & Tuning
Forum with political debate.