Hi...newb here as you can tell. I just bought my first bike... a 96 zx7r with SuperTrapp exhaust...It looks to me like all new pipes up to the headers. The problem is when it is coasting it misses/sputters and sounds ****ty...leading me to believe its running lean or something else that is worse than merely sounding bad. When accelerating or decelerating or under moderate power it's smooth as can be. What is the problem and how do i go about fixing it? I'll go back to stock exhuast if necessary.