I'm ditching the converters on a 2007 gt mustang, And a 2007 gt500. This being a first exhaust job involving knocking off the converters on a 2005 and up mustang, they have a diablo programmer that says it can turn off the " downstream " o2 sensors and " should run fine " no check engine light, Low fuel millage , loss of power, ect. so can I knock off the converters, download the program, weld everything up and off they go? one more is the sensor that is in the converter will that be a problem with the converters missing? Thxs EP429