I recently installed an OBD1 ECU into my 98 Automatic Integra LS. The guy who sold me the conversion harness told me that I didn't need to convert my TCM to an OBD1 like most people have to do with an Automatic ECU conversion. But when I started the car my D4 light on my guages started flashing. It flashes constanly and doesn't pause. Overall the car runs, the check light hasn't come up, and it shifts at the right points. But I was just wondering why and how I can fix the D4 light from flashing? or whether not this is a serious problem? thank you.....