I have a 92 civic that I recently had the engine replaced in....it has the 1.5 with an auto tranny. Problem is that the engine does not shift when it should. I have tried playing with the throttle control cable, but all it does is adjust how smooth/harsh it shifts, not when. I do not believe that the tranny is slipping, because it shifts at the same points, just too late. I assume that this is controlled by the ecu...how do I change it?