I had my car dynoed on 110 LEADED fuel, and read about some new fuel from VP which is supposed to be awesome for turbo cars. (MS109) which is 109 unleaded. I bought a 55 gal drum of the stuff, but with my XEDE race-gas map, my AEM air/fuel meter was reading wierd numbers, not like the norm of the 110 leaded. I called the boys at vishnu and David said to use the fuel I was Dynoed on because of the different "Burn" characteristics of leaded/unleaded. It makes sence, If this helps anyone out before you buy some large drum of gas, I've done my job

P.S. anyone looking to buy 109 unleaded? about 45 gallons of it?
P.S.S. I can still use it on my "street"map with some HP gains, but its not worth the smell( like someone spilled nailpolish remover all over the back seat!) Its back to the Bat-cave for the good old 110 leaded!