I just put a 2004 5.7L Hemi in my sons Jeep and I noticed that my scanner is telling me the trans is in limpin mode. Does anyone know if engine codes will also put the trans in limp mode? I do have some o-2 codes but the trans is not generating codes. The exhaust pipes are not on yet so I get o-2 heater codes almost instantly. I also have read that I will need to take it to Dodge and have the ETC and trans parameters set using the DRB3. Anyone know what this is and what it does?