Are you taking about the 1997/1998 951 engine in the GSX?
If so, its something about engine leaning causing engine failure.
The year after they fixed it by changing position of carbs and adjust jetting and going silver
Not sure if they did anything to the cylinders.
The white pipe they say gives you better hp iirc.
Or would this be like the question I have ... somewhere in the timeframe of 1991 - 1994 the 580 engine changed from yellow to white; what are the differences?
Rod
There were a few changes in the Yellow to the white engines. The most notable was how the water flowed, and where the electronics at. Parts aren't interchangeable... but they were very similar.