Something is def draining it. Might have to get a 12v bulb tester and start testing some fuses to see if anything is sucking it dry. Some stuff like ECM, radio and so on will drain power but it's like .75milliamps, nothing to cause the battery to drain that fast, unless it has a short in it. It's a PITA process and hopefully you find it quick. I know it can be a PITA having to start it everyday just to make sure it doesn't drain like that.
__________________ 1995 Mustang GT-Heavily Modded-Sold 2003 Ford Lightning-Sold 1997 Saleen-5.4 conversion-Sold 2005 Mustang GT-Torch Red-Sold 2003 Mustang Cobra-Oxford White 2003 4Runner V8 Sport Edition 4X4 | 
99 Cobra battery drain 
