Thats a real fast time to run 12.72.I was surprised you are running the stock converter,but if it works why change it.Mine is just a stock modified 3000 D5.I should not be even thinking about converters until i figure out where this exhaust leak is.That is probably the root of some of my tuning problems.I am waiting till next thursday before i try that ATF in the line because if it ruins the 02 sensor I might have trouble getting to the shop thursday.I have to get my new Walbro 340 fuel pump Hot wire kit installed along with a fuel sending unit.