1988 brought the most changes seen to the Gold Wing series since its inception. The biggest difference was that the flat-four engine was replaced with a 1,520 cc (93 cu in) flat-six engine. Although it was still fueled by carburetors, Honda introduced solid state digital ignition. This both increased power and reduced noise. Honda also enclosed the entire motorcycle in plastic, giving it a seamless appearance.One major innovation was the addition of a "reverse gear", which was actually a creative use of the electric starter motor linked to the transmission. Because of the size and weight, it was felt that some people would have problems backing it up.Between 1988 and 1990, only one model was available. From 1990 Honda introduced the SE, which was essentially a cosmetic improvement including things like two-tone paint, a trunk spoiler and some others and most options were added to this model. In later years more features were added to the SE after criticism that the price premium brought little more than window dressing.