I agree that the surge is a result of a mapping program. I fully believe the fuel curve is lean which causes the surge. George and I have experimented with moving the TPS and found that it does relocate the surge which can be a benefit to certain riding conditions or styles. Running the GTS on an Eddy Current dino with EGA capabilities would pin point the nature of the problem. FWIW, Pat ran his R-6 on one Saturday and got a data sheet with mixture readouts at every 1000 RPM. Although knowing exactly why the GTS surges like it does would be nice, unless we can do something about it, it is about useless information. RSRBOB
